{"id":5723,"date":"2025-12-24T02:35:38","date_gmt":"2025-12-24T02:35:38","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5723"},"modified":"2025-12-24T02:36:28","modified_gmt":"2025-12-24T02:36:28","slug":"gb-t-3098-2-2015-coarse-thread-nut-properties-standard","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/fr\/blog\/gb-t-3098-2-2015-coarse-thread-nut-properties-standard\/","title":{"rendered":"GB\/T 3098.2-2015\u00a0: Norme relative aux propri\u00e9t\u00e9s des \u00e9crous \u00e0 filetage grossier"},"content":{"rendered":"<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">Plan de l'article<\/h2>\n<p style=\"margin-bottom: 15px;\">Cet article propose une exploration compl\u00e8te de la norme GB\/T 3098.2-2015, structur\u00e9e pour faciliter la consultation et l'application pratique dans les contextes d'ing\u00e9nierie\u00a0:<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>Introduction : Aper\u00e7u et applicabilit\u00e9 de la norme.<\/li>\n<li>Mat\u00e9riaux : Composition chimique et directives de traitement thermique.<\/li>\n<li>Propri\u00e9t\u00e9s m\u00e9caniques : exigences en mati\u00e8re de charge d'\u00e9preuve.<\/li>\n<li>Exigences de duret\u00e9\u00a0: Valeurs de duret\u00e9 sp\u00e9cifi\u00e9es.<\/li>\n<li>Styles d'\u00e9crous et correspondance des boulons\u00a0: Compatibilit\u00e9 avec les boulons.<\/li>\n<li>Consid\u00e9rations relatives au couple : Aper\u00e7u de l'application du couple.<\/li>\n<li>FAQ : R\u00e9ponses aux questions professionnelles courantes.<\/li>\n<\/ul>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">Introduction<\/h2>\n<p style=\"margin-bottom: 15px;\">La norme GB\/T 3098.2-2015 d\u00e9finit les propri\u00e9t\u00e9s m\u00e9caniques et physiques des \u00e9crous \u00e0 gros filetage en acier au carbone ou en acier alli\u00e9, test\u00e9s \u00e0 des temp\u00e9ratures ambiantes comprises entre 10 \u00b0C et 35 \u00b0C. Elle est essentielle pour garantir la fiabilit\u00e9 et la s\u00e9curit\u00e9 des assemblages de fixation dans des secteurs tels que la construction, l'automobile et la fabrication de machines.<\/p>\n<p style=\"margin-bottom: 15px;\">Cette norme porte sur les charges d'\u00e9preuve, la duret\u00e9 et les sp\u00e9cifications des mat\u00e9riaux afin de pr\u00e9venir les ruptures sous charge. Les ing\u00e9nieurs doivent appliquer ces directives lors de la conception et de l'assurance qualit\u00e9 pour associer les \u00e9crous aux boulons appropri\u00e9s, optimisant ainsi les performances et la dur\u00e9e de vie de l'assemblage.<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">Mat\u00e9riels<\/h2>\n<p style=\"margin-bottom: 15px;\">Les \u00e9crous doivent \u00eatre fabriqu\u00e9s en acier au carbone de composition chimique sp\u00e9cifi\u00e9e afin d'obtenir les propri\u00e9t\u00e9s m\u00e9caniques requises. Un traitement thermique, tel que la trempe et le revenu, est obligatoire pour les classes de propri\u00e9t\u00e9s sup\u00e9rieures afin de garantir une trempabilit\u00e9 suffisante, aboutissant \u00e0 une structure martensitique de type 90% dans la partie filet\u00e9e avant revenu.<\/p>\n<p style=\"margin-bottom: 15px;\">\u00c9l\u00e9ments cl\u00e9s \u00e0 prendre en compte pour le choix des mat\u00e9riaux\u00a0:<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>Limiter la teneur en carbone pour contr\u00f4ler la duret\u00e9 et la fragilit\u00e9.<\/li>\n<li>Maintenir une teneur minimale en mangan\u00e8se pour assurer la r\u00e9sistance et la trempabilit\u00e9.<\/li>\n<li>Limiter les teneurs en phosphore et en soufre pour \u00e9viter la fragilisation.<\/li>\n<li>Appliquer la trempe et le revenu pour les classes 05, 8 (D&gt; M16), 10 et 12.<\/li>\n<\/ul>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<h3 style=\"text-align: center; font-size: 1.2em; margin-bottom: 10px;\">Composition chimique<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Classe de propri\u00e9t\u00e9<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Mat\u00e9riel<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Traitement thermique<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">C (%) max<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Mn (%) min<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">P (%) max<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">S (%) max<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">acier au carbone<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Facultatif<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.58<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.060<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">acier au carbone<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Tremp\u00e9 et revenu<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.58<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.048<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.058<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">acier au carbone<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Facultatif<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.58<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.060<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">acier au carbone<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Facultatif<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.58<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.060<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Style 2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">acier au carbone<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Facultatif<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.58<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.060<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Style 1 D \u2264 M16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">acier au carbone<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Facultatif<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.58<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.060<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Style 1 D &gt; M16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">acier au carbone<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Tremp\u00e9 et revenu<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.58<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.048<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.058<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">acier au carbone<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Tremp\u00e9 et revenu<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.58<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.048<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.058<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">acier au carbone<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Tremp\u00e9 et revenu<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.58<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.45<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.048<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.058<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin-bottom: 15px;\">Remarque\u00a0: Pour les cours n\u00e9cessitant une trempe et un revenu, les mat\u00e9riaux doivent pr\u00e9senter une trempabilit\u00e9 suffisante. Leur composition chimique doit \u00eatre \u00e9valu\u00e9e conform\u00e9ment aux normes en vigueur.<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">Propri\u00e9t\u00e9s m\u00e9caniques<\/h2>\n<p style=\"margin-bottom: 15px;\">Les \u00e9crous doivent r\u00e9sister \u00e0 des charges d'\u00e9preuve sp\u00e9cifi\u00e9es sans rupture, repr\u00e9sentant la charge maximale admissible dans les assemblages m\u00e9caniques. Ces valeurs garantissent l'int\u00e9grit\u00e9 structurelle sous tension.<\/p>\n<p style=\"margin-bottom: 15px;\">Instructions pour l'application\u00a0:<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>S\u00e9lectionnez la classe de propri\u00e9t\u00e9 en fonction des exigences de charge de l'assemblage.<\/li>\n<li>V\u00e9rifier les charges d'\u00e9preuve par des essais \u00e0 temp\u00e9rature ambiante.<\/li>\n<li>Prenez en compte des facteurs tels que l'engagement du filetage et la compatibilit\u00e9 des mat\u00e9riaux.<\/li>\n<\/ul>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<h3 style=\"text-align: center; font-size: 1.2em; margin-bottom: 10px;\">Charges d'\u00e9preuve (N)<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Fil<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Pas<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">04<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">05<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">7100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8250<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">9500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12140<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">14800<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">16300<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">7640<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">11700<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">13500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">17200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">23100<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">11000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">14500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">16800<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">19400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24700<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">30100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">33200<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">13900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">18300<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">21600<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">31800<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">38100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">42500<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">22000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">29000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">34200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">39400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">50500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">60300<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">67300<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">32000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">42200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">51400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">59000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">74200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">88500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">100300<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M14<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">43700<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">57500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">70200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">80500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">101200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">120800<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">136900<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">59700<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">78500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">95800<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">109900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">138200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">164900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">186800<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">73000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">96000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">121000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">138200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">176600<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">203500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">230400<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">93100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">122500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">154400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">176400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">225400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">259700<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">294000<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M22<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">115100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">151500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">190900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">218200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">278800<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">321200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">363600<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">134100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">176500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">222400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">254200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">324800<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">374200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">423600<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M27<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">174400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">229500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">289200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">330500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">422300<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">486500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">550800<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M30<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">213200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">280500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">353400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">403900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">516100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">594700<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">673200<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M33<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">263700<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">347000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">437200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">499700<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">638500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">735600<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">832800<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M36<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">310500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">408500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">514700<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">588200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">751600<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">866000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">980400<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M39<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">370900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">488000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">614900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">702700<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">897900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1035000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1171000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin-bottom: 15px;\">Remarque : La charge d'\u00e9preuve correspond approximativement \u00e0 la r\u00e9sistance \u00e0 la traction minimale que l'\u00e9crou peut supporter.<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">Exigences de duret\u00e9<\/h2>\n<p style=\"margin-bottom: 15px;\">La duret\u00e9 garantit que les \u00e9crous r\u00e9sistent \u00e0 la d\u00e9formation et conservent leur int\u00e9grit\u00e9 sous charge. Les valeurs sont sp\u00e9cifi\u00e9es selon les \u00e9chelles Vickers (HV), Brinell (HB) et Rockwell (HRC), avec les conversions conformes \u00e0 la norme ISO 18265.<\/p>\n<p style=\"margin-bottom: 15px;\">Conseils pratiques\u00a0:<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>Utilisez le test Vickers avec une charge minimale de 98 N pour plus de pr\u00e9cision.<\/li>\n<li>Ajuster en fonction de la taille de l'\u00e9crou\u00a0; des valeurs minimales diff\u00e9rentes s'appliquent pour D &gt; M16.<\/li>\n<li>V\u00e9rifier que le traitement thermique post\u00e9rieur r\u00e9pond aux exigences de la classe.<\/li>\n<\/ul>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<h3 style=\"text-align: center; font-size: 1.2em; margin-bottom: 10px;\">Exigences de duret\u00e9<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\" rowspan=\"2\">Fil<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">04<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">05<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">5<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">6<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">8<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">10<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">12<\/th>\n<\/tr>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Min<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Max<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Min<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Max<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Min<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Max<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Min<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Max<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Min<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Max<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Min<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Max<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Min<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Max<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5 \u2264 D \u2264 M16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">HV<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">188<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">302<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">272<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">353<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">130<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">302<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">150<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">302<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">302<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">272<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">353<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">295<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">353<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M16 &lt; D \u2264 M39<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">188<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">302<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">272<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">353<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">146<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">302<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">170<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">302<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">233<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">353<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">272<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">353<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">272<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">353<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5 \u2264 D \u2264 M16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">HB<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">179<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">287<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">259<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">336<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">124<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">287<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">143<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">287<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">190<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">287<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">259<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">336<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">280<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">336<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M16 &lt; D \u2264 M39<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">179<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">287<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">259<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">336<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">139<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">287<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">162<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">287<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">221<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">336<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">259<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">336<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">259<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">336<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5 \u2264 D \u2264 M16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">HRC<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">30<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">26<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">36<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">30<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">30<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">30<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">26<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">36<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">29<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">36<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M16 &lt; D \u2264 M39<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">30<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">26<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">36<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">30<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">30<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">36<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">26<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">36<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">26<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">36<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin-bottom: 15px;\">Remarques\u00a0: Pour les \u00e9crous de type\u00a02 de classe\u00a08, la duret\u00e9 minimale est de 180\u00a0HV (171\u00a0HB). Pour les \u00e9crous de type\u00a02 de classe\u00a010, elle est de 302\u00a0HV (287\u00a0HB, 30\u00a0HRC). Pour les \u00e9crous de type\u00a02 de classe\u00a012, elle est de 272\u00a0HV (259\u00a0HB, 26\u00a0HRC).<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">Styles d'\u00e9crous et correspondance des boulons<\/h2>\n<p style=\"margin-bottom: 15px;\">Les \u00e9crous sont class\u00e9s en styles (0 mince, 1 standard, 2 haut) avec des plages de diam\u00e8tres sp\u00e9cifiques et des classes de boulons compatibles pour assurer la r\u00e9sistance de l'assemblage et \u00e9viter le d\u00e9rapage ou la d\u00e9faillance.<\/p>\n<p style=\"margin-bottom: 15px;\">Recommandations pour l'appariement\u00a0:<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>Utilisez des \u00e9crous fins (style 0) comme contre-\u00e9crous avec un \u00e9crou standard ou haut, en serrant d'abord les fins.<\/li>\n<li>Pour une pr\u00e9charge optimale, choisissez la classe d'\u00e9crou correspondant \u00e0 la classe de propri\u00e9t\u00e9 maximale du boulon.<\/li>\n<li>Tenez compte du pas de filetage pour les applications fines ou grossi\u00e8res.<\/li>\n<\/ul>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<h3 style=\"text-align: center; font-size: 1.2em; margin-bottom: 10px;\">Compatibilit\u00e9 des \u00e9crous, des diam\u00e8tres et des boulons<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Classe de propri\u00e9t\u00e9<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">04<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">05<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Style 1 (Standard)<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5\u2264D\u2264M39 \/ M8x1\u2264D\u2264M39x3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5\u2264D\u2264M39 \/ M8x1\u2264D\u2264M39x3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5\u2264D\u2264M39 \/ M8x1\u2264D\u2264M39x3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5\u2264D\u2264M39 \/ M8x1\u2264D\u2264M16x1,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5\u2264D\u2264M16<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Style 2 (Haut)<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M16\u2264D\u2264M39 \/ M8x1\u2264D\u2264M16x1,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5\u2264D\u2264M39 \/ M8x1\u2264D\u2264M39x3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5\u2264D\u2264M39 \/ M8x1\u2264D\u2264M16x1,5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Style 0 (Fin)<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5\u2264D\u2264M39 \/ M8x1\u2264D\u2264M39x3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5\u2264D\u2264M39 \/ M8x1\u2264D\u2264M39x3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Classe maximale de boulon correspondante<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12.9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">Consid\u00e9rations relatives au couple<\/h2>\n<p style=\"margin-bottom: 15px;\">La norme ne sp\u00e9cifie pas le couple de rupture des \u00e9crous, conform\u00e9ment aux normes ISO 898-2 et DIN 267-24, afin d'\u00e9viter toute confusion entre couple et pr\u00e9charge comme r\u00e9f\u00e9rences de conception. Elle privil\u00e9gie plut\u00f4t les charges d'\u00e9preuve, la r\u00e9sistance \u00e0 la fatigue et la duret\u00e9 pour garantir la fiabilit\u00e9 des assemblages.<\/p>\n<p style=\"margin-bottom: 15px;\">En pratique, le couple appliqu\u00e9 aux \u00e9crous ou boulons d'un assemblage se convertit partiellement en force de serrage, influenc\u00e9e par le frottement, les lubrifiants et les composants tels que les rondelles. \u00c0 titre indicatif, consultez les valeurs de couple de boulons de m\u00eame classe et de m\u00eame diam\u00e8tre, mais privil\u00e9giez toujours les calculs d'ing\u00e9nierie pour les applications sp\u00e9cifiques.<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">FAQ<\/h2>\n<ol style=\"list-style-type: decimal; padding-left: 20px; margin-bottom: 20px;\">\n<li style=\"margin-bottom: 15px;\"><strong>Pourquoi la trempe et le revenu sont-ils n\u00e9cessaires pour les noix de qualit\u00e9 sup\u00e9rieure\u00a0?<\/strong><br \/>\nElle am\u00e9liore la trempabilit\u00e9, assurant une structure martensitique pour une r\u00e9sistance et une r\u00e9sistance \u00e0 la d\u00e9formation am\u00e9lior\u00e9es sous des charges \u00e9lev\u00e9es, conform\u00e9ment aux exigences du tableau 3.<\/li>\n<li style=\"margin-bottom: 15px;\"><strong>Comment les \u00e9crous fins (style 0) doivent-ils \u00eatre utilis\u00e9s dans les assemblages\u00a0?<\/strong><br \/>\nAssembler comme contre-\u00e9crous avec un \u00e9crou standard ou haut\u00a0; serrer d\u2019abord l\u2019\u00e9crou fin contre la pi\u00e8ce, puis l\u2019\u00e9crou ext\u00e9rieur contre celle-ci pour \u00e9viter le desserrage.<\/li>\n<li style=\"margin-bottom: 15px;\"><strong>Que se passe-t-il si la duret\u00e9 d'un \u00e9crou d\u00e9passe la valeur maximale sp\u00e9cifi\u00e9e\u00a0?<\/strong><br \/>\nUne duret\u00e9 excessive peut indiquer des risques de sur-revenu, entra\u00eenant une fragilit\u00e9 ; refaire les tests ou rejeter les lots pour se conformer aux limites du tableau 6 et maintenir la ductilit\u00e9.<\/li>\n<li style=\"margin-bottom: 15px;\"><strong>Peut-on utiliser des \u00e9crous avec des boulons de qualit\u00e9 inf\u00e9rieure\u00a0?<\/strong><br \/>\nOui, mais utilisez la classe maximale du boulon conform\u00e9ment \u00e0 la norme pour \u00e9viter toute sous-utilisation\u00a0; v\u00e9rifiez toujours la pr\u00e9charge d'assemblage et la r\u00e9sistance \u00e0 la fatigue.<\/li>\n<li style=\"margin-bottom: 15px;\"><strong>Comment tester avec pr\u00e9cision les charges d'\u00e9preuve des \u00e9crous ?<\/strong><br \/>\nUtiliser les m\u00e9thodes de la clause 9 \u00e0 10 \u00b0C-35 \u00b0C ; appliquer une charge axiale sans rotation, en assurant un engagement complet du filetage pour simuler les conditions r\u00e9elles.<\/li>\n<li style=\"margin-bottom: 15px;\"><strong>Pourquoi les limites de phosphore et de soufre sont-elles plus strictes pour les classes de compos\u00e9s tremp\u00e9s ?<\/strong><br \/>\nDes niveaux plus faibles emp\u00eachent la fragilisation lors du traitement thermique, am\u00e9liorant ainsi la robustesse et la fiabilit\u00e9 dans les applications \u00e0 fortes contraintes.<\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Article Outline This article offers a comprehensive exploration of the GB\/T 3098.2-2015 standard, structured for ease of reference and practical application in engineering contexts: Introduction: Overview and applicability of the standard. Materials: Chemical composition and heat treatment guidelines. Mechanical Properties: Proof load requirements. Hardness Requirements: Specified hardness values. Nut Styles and Bolt Matching: Compatibility with [&hellip;]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5723","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/posts\/5723","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/comments?post=5723"}],"version-history":[{"count":3,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/posts\/5723\/revisions"}],"predecessor-version":[{"id":5726,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/posts\/5723\/revisions\/5726"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/media?parent=5723"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/categories?post=5723"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/tags?post=5723"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}