{"id":5559,"date":"2025-12-19T08:33:42","date_gmt":"2025-12-19T08:33:42","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5559"},"modified":"2025-12-19T08:33:42","modified_gmt":"2025-12-19T08:33:42","slug":"mechanical-performance-standards-for-fasteners-gb-t-3098-1-2010","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/mechanical-performance-standards-for-fasteners-gb-t-3098-1-2010\/","title":{"rendered":"Ti\u00eau chu\u1ea9n v\u1ec1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a c\u00e1c lo\u1ea1i \u1ed1c v\u00edt: GB\/T 3098.1-2010"},"content":{"rendered":"<div style=\"font-family: Arial, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px;\">\n<p style=\"text-align: justify; margin-bottom: 20px;\">Ti\u00eau chu\u1ea9n GB\/T 3098.1-2010 quy \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a bu l\u00f4ng, v\u00edt v\u00e0 \u0111inh t\u00e1n l\u00e0m b\u1eb1ng th\u00e9p cacbon v\u00e0 th\u00e9p h\u1ee3p kim. Ti\u00eau chu\u1ea9n n\u00e0y x\u00e1c \u0111\u1ecbnh c\u00e1c c\u1ea5p \u0111\u1ed9 b\u1ec1n, v\u1eadt li\u1ec7u v\u00e0 y\u00eau c\u1ea7u v\u1ec1 hi\u1ec7u su\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau. Ti\u00eau chu\u1ea9n n\u00e0y \u00e1p d\u1ee5ng cho c\u00e1c chi ti\u1ebft l\u1eafp gh\u00e9p c\u00f3 \u0111\u01b0\u1eddng k\u00ednh ren danh ngh\u0129a t\u1eeb M1.6 \u0111\u1ebfn M39, ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb -50\u00b0C \u0111\u1ebfn +300\u00b0C, v\u1edbi c\u00e1c quy \u0111\u1ecbnh c\u1ed1t l\u00f5i v\u1ec1 hi\u1ec7u su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng.<\/p>\n<h2 style=\"color: #0056b3; margin-top: 40px; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">M\u1ee5c l\u1ee5c<\/h2>\n<ul style=\"list-style-type: none; padding-left: 0; margin-bottom: 40px;\">\n<li style=\"margin-bottom: 10px;\"><a style=\"text-decoration: none; color: #007bff;\" href=\"#marking-materials\">H\u1ec7 th\u1ed1ng k\u00fd hi\u1ec7u cho c\u00e1c lo\u1ea1i t\u00e0i s\u1ea3n v\u00e0 v\u1eadt li\u1ec7u<\/a><\/li>\n<li style=\"margin-bottom: 10px;\"><a style=\"text-decoration: none; color: #007bff;\" href=\"#mechanical-properties\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 v\u1eadt l\u00fd<\/a><\/li>\n<li style=\"margin-bottom: 10px;\"><a style=\"text-decoration: none; color: #007bff;\" href=\"#faq\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/a><\/li>\n<\/ul>\n<div id=\"marking-materials\">\n<h2 style=\"color: #0056b3; margin-top: 40px; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">H\u1ec7 th\u1ed1ng k\u00fd hi\u1ec7u cho c\u00e1c lo\u1ea1i t\u00e0i s\u1ea3n v\u00e0 v\u1eadt li\u1ec7u<\/h2>\n<h3 style=\"color: #333; margin-top: 20px;\">5. H\u1ec7 th\u1ed1ng \u0111\u00e1nh d\u1ea5u cho c\u00e1c lo\u1ea1i t\u00e0i s\u1ea3n<\/h3>\n<p style=\"text-align: justify; margin-bottom: 20px;\">K\u00fd hi\u1ec7u ph\u00e2n lo\u1ea1i thu\u1ed9c t\u00ednh cho bu l\u00f4ng, \u1ed1c v\u00edt v\u00e0 \u0111inh t\u00e1n bao g\u1ed3m hai con s\u1ed1 \u0111\u01b0\u1ee3c ph\u00e2n c\u00e1ch b\u1edfi m\u1ed9t d\u1ea5u ch\u1ea5m:<\/p>\n<ul style=\"margin-bottom: 20px; padding-left: 20px;\">\n<li>C\u00e1c con s\u1ed1 b\u00ean tr\u00e1i d\u1ea5u ch\u1ea5m bi\u1ec3u th\u1ecb 1\/100 \u0111\u1ed9 b\u1ec1n k\u00e9o danh ngh\u0129a (R).<sub>m, nom<\/sub>) t\u00ednh b\u1eb1ng MPa.<\/li>\n<li>Con s\u1ed1 b\u00ean ph\u1ea3i d\u1ea5u ch\u1ea5m g\u1ea5p 10 l\u1ea7n t\u1ef7 l\u1ec7 gi\u1eefa gi\u1edbi h\u1ea1n ch\u1ea3y danh ngh\u0129a (gi\u1edbi h\u1ea1n ch\u1ea3y th\u1ea5p h\u01a1n R).<sub>eL, nom<\/sub>), ho\u1eb7c \u1ee9ng su\u1ea5t danh ngh\u0129a \u1edf \u0111\u1ed9 gi\u00e3n kh\u00f4ng t\u1ef7 l\u1ec7 0,2% (R)<sub>p0.2, nom<\/sub>), ho\u1eb7c \u1ee9ng su\u1ea5t danh ngh\u0129a \u1edf \u0111\u1ed9 gi\u00e3n kh\u00f4ng t\u1ef7 l\u1ec7 0,0048d \u0111\u1ed1i v\u1edbi c\u00e1c chi ti\u1ebft l\u1eafp gh\u00e9p (R<sub>pf, nom<\/sub>) \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n k\u00e9o danh ngh\u0129a (R)<sub>m, nom<\/sub>) .<\/li>\n<\/ul>\n<p style=\"text-align: justify; margin-bottom: 20px;\">V\u00ed d\u1ee5: M\u1ed9t chi ti\u1ebft l\u1eafp gh\u00e9p c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o danh ngh\u0129a R<sub>m, nom<\/sub> = 800 MPa v\u00e0 t\u1ef7 l\u1ec7 ch\u1ea3y d\u1ebbo 0,8 c\u00f3 c\u1ea5p t\u00ednh ch\u1ea5t \u201c8,8\u201d. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i gi\u1ea3m, h\u00e3y \u0111\u00e1nh d\u1ea5u l\u00e0 \u201c08,8\u201d (xem 10.4).<\/p>\n<p style=\"text-align: justify; margin-bottom: 20px;\">T\u00edch c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o danh ngh\u0129a v\u00e0 t\u1ef7 l\u1ec7 ch\u1ea3y d\u1ebbo cho ra c\u01b0\u1eddng \u0111\u1ed9 ch\u1ea3y d\u1ebbo danh ngh\u0129a t\u00ednh b\u1eb1ng MPa. Ph\u1ee5 l\u1ee5c A cung c\u1ea5p d\u1eef li\u1ec7u v\u1ec1 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o danh ngh\u0129a v\u00e0 \u0111\u1ed9 gi\u00e3n d\u00e0i sau khi \u0111\u1ee9t \u0111\u1ed1i v\u1edbi t\u1eebng lo\u1ea1i t\u00ednh ch\u1ea5t.<\/p>\n<p style=\"text-align: justify; margin-bottom: 20px;\">Vi\u1ec7c \u0111\u00e1nh d\u1ea5u v\u00e0 d\u00e1n nh\u00e3n c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u ph\u1ea3i tu\u00e2n theo m\u1ee5c 10.3, v\u00e0 \u0111\u1ed1i v\u1edbi kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i gi\u1ea3m, ph\u1ea3i tu\u00e2n theo m\u1ee5c 10.4. H\u1ec7 th\u1ed1ng \u0111\u00e1nh d\u1ea5u n\u00e0y c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho c\u00e1c k\u00edch th\u01b0\u1edbc v\u01b0\u1ee3t qu\u00e1 ph\u1ea1m vi ti\u00eau chu\u1ea9n (d &gt; 39 mm) n\u1ebfu \u0111\u00e1p \u1ee9ng B\u1ea3ng 1 v\u00e0 2.<\/p>\n<h3 style=\"color: #333; margin-top: 20px;\">6. V\u1eadt li\u1ec7u<\/h3>\n<p style=\"text-align: justify; margin-bottom: 20px;\">B\u1ea3ng 1 quy \u0111\u1ecbnh gi\u1edbi h\u1ea1n th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u00f4i luy\u1ec7n t\u1ed1i thi\u1ec3u \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed7i c\u1ea5p \u0111\u1ed9 b\u1ec1n. Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c gia c\u00f3 li\u00ean quan.<\/p>\n<p style=\"text-align: justify; margin-bottom: 20px;\">L\u01b0u \u00fd: M\u1ed9t s\u1ed1 nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc c\u00f3 th\u1ec3 b\u1ecb h\u1ea1n ch\u1ebf ho\u1eb7c c\u1ea5m theo quy \u0111\u1ecbnh \u1edf m\u1ed9t s\u1ed1 qu\u1ed1c gia. C\u1ea7n l\u01b0u \u00fd khi \u0111i\u1ec1u n\u00e0y \u00e1p d\u1ee5ng.<\/p>\n<p style=\"text-align: justify; margin-bottom: 20px;\">C\u00e1c y\u00eau c\u1ea7u v\u1ec1 v\u1eadt li\u1ec7u ch\u1ebf t\u1ea1o \u1ed1c v\u00edt trong ch\u01b0\u01a1ng 4 c\u1ee7a ti\u00eau chu\u1ea9n GB\/T 5267.3 \u00e1p d\u1ee5ng cho c\u00e1c lo\u1ea1i \u1ed1c v\u00edt m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng.<\/p>\n<h4 style=\"color: #333; margin-top: 20px; text-align: center;\">B\u1ea3ng 1: V\u1eadt li\u1ec7u<\/h4>\n<table style=\"width: 100%; border-collapse: collapse; margin-bottom: 20px; border: 1px solid #ddd; font-size: 12px;\">\n<thead>\n<tr style=\"background-color: #f8f9fa;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"3\">L\u1edbp t\u00e0i s\u1ea3n<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"3\">V\u1eadt li\u1ec7u v\u00e0 x\u1eed l\u00fd nhi\u1ec7t<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"5\">Gi\u1edbi h\u1ea1n th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc (Ph\u00e2n t\u00edch \u0111\u00fac, %)<sup>M\u1ed9t<\/sup><\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"3\">Nhi\u1ec7t \u0111\u1ed9 t\u00f4i luy\u1ec7n (\u00b0C t\u1ed1i thi\u1ec3u)<\/th>\n<\/tr>\n<tr style=\"background-color: #f8f9fa;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"2\">C<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">P<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">S<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">B<sup>b<\/sup><\/th>\n<\/tr>\n<tr style=\"background-color: #f8f9fa;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">ph\u00fat<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">t\u1ed1i \u0111a<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">t\u1ed1i \u0111a<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">t\u1ed1i \u0111a<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">t\u1ed1i \u0111a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\" rowspan=\"2\">4.6<sup>\u0111\u0129a CD<\/sup><\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\" rowspan=\"5\">Th\u00e9p cacbon ho\u1eb7c th\u00e9p cacbon c\u00f3 ch\u1ea5t ph\u1ee5 gia<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">\u2014<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">0.55<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">0.05<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">0.06<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"5\">Kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"5\">\u2014<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4.8<sup>d<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">5.6<sup>e<\/sup><\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.13<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.55<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.05<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.06<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">5.8<sup>d<\/sup><\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">\u2014<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.55<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.05<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.06<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6.8<sup>d<\/sup><\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.15<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.55<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.05<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.06<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\" rowspan=\"3\">8.8<sup>f<\/sup><\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Th\u00e9p cacbon c\u00f3 ph\u1ee5 gia (v\u00ed d\u1ee5: B, Mn, Cr) \u0111\u01b0\u1ee3c t\u00f4i v\u00e0 ram ho\u1eb7c<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.15<sup>e<\/sup><\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.025<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.025<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"3\">0.003<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"3\">425<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Th\u00e9p cacbon t\u00f4i v\u00e0 ram ho\u1eb7c<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.55<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.025<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.025<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Th\u00e9p h\u1ee3p kim \u0111\u01b0\u1ee3c t\u00f4i v\u00e0 ram<sup>g<\/sup><\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.55<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.025<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.025<\/td>\n<\/tr>\n<p><!-- Additional rows for 9.8, 10.9, 12.9 as per source, abbreviated for brevity --><\/p>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"8\">(B\u1ea3ng ti\u1ebfp t\u1ee5c v\u1edbi c\u1ea5u tr\u00fac t\u01b0\u01a1ng t\u1ef1 cho c\u00e1c lo\u1ea1i thu\u1ed9c t\u00ednh 9.8, 10.9 v\u00e0 12.9. Vui l\u00f2ng tham kh\u1ea3o ti\u00eau chu\u1ea9n \u0111\u1ec3 bi\u1ebft \u0111\u1ea7y \u0111\u1ee7 chi ti\u1ebft.)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin-bottom: 20px;\"><sup>M\u1ed9t<\/sup> Trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 tranh ch\u1ea5p, vi\u1ec7c ph\u00e2n t\u00edch s\u1ea3n ph\u1ea9m s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng.<br \/>\n<sup>b<\/sup> H\u00e0m l\u01b0\u1ee3ng boron l\u00ean \u0111\u1ebfn 0,005%, boron kh\u00f4ng hi\u1ec7u qu\u1ea3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1edfi titan v\u00e0\/ho\u1eb7c nh\u00f4m.<br \/>\n<sup>c<\/sup> \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i \u1ed1c v\u00edt \u0111\u1ea7u ngu\u1ed9i 4.6 v\u00e0 5.6, c\u00f3 th\u1ec3 c\u1ea7n x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ec3 t\u0103ng \u0111\u1ed9 d\u1ebbo v\u00e0 \u0111\u1ed9 b\u1ec1n.<br \/>\n<sup>d<\/sup> Th\u00e9p d\u1ec5 gia c\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng v\u1edbi h\u00e0m l\u01b0\u1ee3ng t\u1ed1i \u0111a S 0,34%, P 0,11%, Pb 0,35%.<br \/>\n<sup>e<\/sup> \u0110\u1ed1i v\u1edbi th\u00e9p cacbon c\u00f3 th\u00eam boron &lt;0,25% C, h\u00e0m l\u01b0\u1ee3ng Mn t\u1ed1i thi\u1ec3u l\u00e0 0,6% \u0111\u1ed1i v\u1edbi lo\u1ea1i 8,8, 0,7% \u0111\u1ed1i v\u1edbi lo\u1ea1i 9,8 v\u00e0 10,9.<br \/>\n<sup>f<\/sup> V\u1eadt li\u1ec7u ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng t\u00f4i c\u1ee9ng \u0111\u1ee7 \u0111\u1ec3 t\u1ea1o th\u00e0nh mactenxit ~90% \u1edf l\u00f5i tr\u01b0\u1edbc khi ram.<br \/>\n<sup>g<\/sup> Th\u00e9p h\u1ee3p kim c\u00f3 \u00edt nh\u1ea5t m\u1ed9t trong c\u00e1c th\u00e0nh ph\u1ea7n sau: Cr 0,30%, Ni 0,30%, Mo 0,20%, V 0,10%; \u0111\u1ed1i v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n b\u1ed9i, t\u1ed5ng kh\u00f4ng nh\u1ecf h\u01a1n 70%.<br \/>\n<sup>h<\/sup> Kh\u00f4ng c\u00f3 l\u1edbp photphua tr\u1eafng tr\u00ean b\u1ec1 m\u1eb7t 12,9; h\u00e3y lo\u1ea1i b\u1ecf l\u1edbp n\u00e0y tr\u01b0\u1edbc khi x\u1eed l\u00fd nhi\u1ec7t.<br \/>\n<sup>T\u00f4i<\/sup> S\u1eed d\u1ee5ng s\u1ea3n ph\u1ea9m 12.9 m\u1ed9t c\u00e1ch th\u1eadn tr\u1ecdng, c\u00e2n nh\u1eafc kh\u1ea3 n\u0103ng c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t, \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh v\u00e0 ph\u01b0\u01a1ng ph\u00e1p si\u1ebft ch\u1eb7t; nguy c\u01a1 n\u1ee9t do \u0103n m\u00f2n \u1ee9ng su\u1ea5t.<\/p>\n<\/div>\n<div id=\"mechanical-properties\">\n<h2 style=\"color: #0056b3; margin-top: 40px; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 v\u1eadt l\u00fd<\/h2>\n<p style=\"text-align: justify; margin-bottom: 20px;\">C\u00e1c lo\u1ea1i \u1ed1c v\u00edt thu\u1ed9c c\u1ea5p \u0111\u1ed9 \u0111\u1eb7c t\u00ednh quy \u0111\u1ecbnh ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc v\u00e0 v\u1eadt l\u00fd trong B\u1ea3ng 2 \u0111\u1ebfn 7 \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng.<sup>1<\/sup>Ch\u01b0\u01a1ng 8 cung c\u1ea5p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m \u0111\u1ec3 x\u00e1c minh s\u1ef1 tu\u00e2n th\u1ee7.<\/p>\n<p style=\"text-align: justify; margin-bottom: 20px;\">L\u01b0u \u00fd 1: Ngay c\u1ea3 khi v\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng B\u1ea3ng 2, m\u1ed9t s\u1ed1 lo\u1ea1i \u1ed1c v\u00edt c\u00f3 th\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i gi\u1ea3m do k\u00edch th\u01b0\u1edbc (xem 8.2, 9.4, 9.5).<\/p>\n<p style=\"text-align: justify; margin-bottom: 20px;\">L\u01b0u \u00fd 2: Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i \u0111\u1ec1u \u00e1p d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i \u1ed1c v\u00edt; ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m quy \u0111\u1ecbnh c\u00e1c lo\u1ea1i, c\u00f3 th\u1ec3 bao g\u1ed3m c\u1ea3 c\u00e1c lo\u1ea1i \u1ed1c v\u00edt kh\u00f4ng \u0111\u1ea1t ti\u00eau chu\u1ea9n.<\/p>\n<h4 style=\"color: #333; margin-top: 20px; text-align: center;\">B\u1ea3ng 2: T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 v\u1eadt l\u00fd c\u1ee7a bu l\u00f4ng, \u1ed1c v\u00edt v\u00e0 \u0111inh t\u00e1n<\/h4>\n<table style=\"width: 100%; border-collapse: collapse; margin-bottom: 20px; border: 1px solid #ddd; font-size: 12px;\">\n<thead>\n<tr style=\"background-color: #f8f9fa;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"3\">KH\u00d4NG.<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"3\" rowspan=\"3\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc ho\u1eb7c v\u1eadt l\u00fd<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"10\">L\u1edbp t\u00e0i s\u1ea3n<\/th>\n<\/tr>\n<tr style=\"background-color: #f8f9fa;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">4.6<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">4.8<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">5.6<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">5.8<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">6.8<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"2\">8.8<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">9,8 (d \u2264 16 mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">10.9<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">12.9<\/th>\n<\/tr>\n<tr style=\"background-color: #f8f9fa;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2264 16 mm<sup>M\u1ed9t<\/sup><\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d &gt; 16 mm<sup>b<\/sup><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\" rowspan=\"2\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\" colspan=\"2\" rowspan=\"2\">\u0110\u1ed9 b\u1ec1n k\u00e9o R<sub>m<\/sub> \/ MPa<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\u0111\u1ec1 c\u1eed<sup>c<\/sup><\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">600<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">800<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">800<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1200<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">ph\u00fat<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">400<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">420<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">500<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">520<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">600<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">800<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">830<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">900<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1040<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1220<\/td>\n<\/tr>\n<p><!-- Additional rows for other properties as per source, abbreviated --><\/p>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"14\">(B\u1ea3ng ti\u1ebfp theo hi\u1ec3n th\u1ecb c\u00e1c \u0111\u1eb7c t\u00ednh nh\u01b0 gi\u1edbi h\u1ea1n ch\u1ea3y, \u0111\u1ed9 c\u1ee9ng, v.v. Vui l\u00f2ng tham kh\u1ea3o ti\u00eau chu\u1ea9n \u0111\u1ec3 c\u00f3 d\u1eef li\u1ec7u \u0111\u1ea7y \u0111\u1ee7.)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin-bottom: 20px;\"><sup>M\u1ed9t<\/sup> C\u00e1c gi\u00e1 tr\u1ecb n\u00e0y kh\u00f4ng \u00e1p d\u1ee5ng cho vi\u1ec7c b\u1eaft v\u00edt k\u1ebft c\u1ea5u.<br \/>\n<sup>b<\/sup> \u0110\u1ed1i v\u1edbi bu l\u00f4ng k\u1ebft c\u1ea5u c\u00f3 \u0111\u01b0\u1eddng k\u00ednh d \u2265 M12.<br \/>\n<sup>c<\/sup> Gi\u00e1 tr\u1ecb danh ngh\u0129a ch\u1ec9 d\u00f9ng \u0111\u1ec3 ch\u1ec9 \u0111\u1ecbnh (Ch\u01b0\u01a1ng 5).<br \/>\n<sup>1<\/sup> Th\u1eed nghi\u1ec7m n\u0103ng l\u01b0\u1ee3ng va \u0111\u1eadp \u1edf -20\u00b0C (xem 9.14).<\/p>\n<\/div>\n<div id=\"faq\">\n<h2 style=\"color: #0056b3; margin-top: 40px; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n<dl style=\"margin-bottom: 20px;\">\n<dt style=\"font-weight: bold; margin-top: 10px;\">1. K\u00fd hi\u1ec7u ph\u00e2n lo\u1ea1i t\u00e0i s\u1ea3n nh\u01b0 \u201c8.8\u201d c\u00f3 \u00fd ngh\u0129a g\u00ec?<\/dt>\n<dd style=\"margin-left: 20px;\">N\u00f3 th\u1ec3 hi\u1ec7n \u0111\u1ed9 b\u1ec1n k\u00e9o danh ngh\u0129a (800 MPa) v\u00e0 t\u1ef7 l\u1ec7 ch\u1ea3y d\u1ebbo (0,8), \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ti\u00eau chu\u1ea9n \u0111\u1ec3 l\u1ef1a ch\u1ecdn trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt.<\/dd>\n<dt style=\"font-weight: bold; margin-top: 10px;\">2. T\u1ea1i sao m\u1ed9t lo\u1ea1i \u1ed1c v\u00edt c\u00f3 th\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i gi\u1ea3m m\u1eb7c d\u00f9 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 v\u1eadt li\u1ec7u?<\/dt>\n<dd style=\"margin-left: 20px;\">Do \u1ea3nh h\u01b0\u1edfng c\u1ee7a h\u00ecnh h\u1ecdc ho\u1eb7c k\u00edch th\u01b0\u1edbc, nh\u01b0 \u0111\u00e3 n\u00eau trong m\u1ee5c 8.2 v\u00e0 9.4; h\u00e3y \u0111\u00e1nh d\u1ea5u l\u00e0 \u201c08.8\u201d trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady.<\/dd>\n<dt style=\"font-weight: bold; margin-top: 10px;\">3. C\u1ea7n l\u01b0u \u00fd nh\u1eefng bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba n\u00e0o \u0111\u1ed1i v\u1edbi \u1ed1c v\u00edt lo\u1ea1i 12.9?<\/dt>\n<dd style=\"margin-left: 20px;\">C\u1ea7n xem x\u00e9t kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t, \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh v\u00e0 ph\u01b0\u01a1ng ph\u00e1p si\u1ebft ch\u1eb7t \u0111\u1ec3 tr\u00e1nh n\u1ee9t do \u0103n m\u00f2n \u1ee9ng su\u1ea5t; kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p c\u00f3 l\u1edbp ph\u1ed1t pho tr\u1eafng h\u00ecnh th\u00e0nh.<\/dd>\n<dt style=\"font-weight: bold; margin-top: 10px;\">4. Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc \u0111\u01b0\u1ee3c x\u00e1c minh nh\u01b0 th\u1ebf n\u00e0o?<\/dt>\n<dd style=\"margin-left: 20px;\">B\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch \u0111\u00fac, k\u1ebft h\u1ee3p v\u1edbi ph\u00e2n t\u00edch s\u1ea3n ph\u1ea9m trong c\u00e1c tranh ch\u1ea5p; tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c gia v\u00e0 c\u00e1c h\u1ea1n ch\u1ebf khu v\u1ef1c \u0111\u1ed1i v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 P v\u00e0 S.<\/dd>\n<dt style=\"font-weight: bold; margin-top: 10px;\">5. Nh\u1eefng th\u1eed nghi\u1ec7m n\u00e0o x\u00e1c nh\u1eadn c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc?<\/dt>\n<dd style=\"margin-left: 20px;\">Th\u1eed nghi\u1ec7m k\u00e9o \u0111\u1ed1i v\u1edbi R<sub>m<\/sub> v\u00e0 R<sub>eL<\/sub>C\u00e1c th\u1eed nghi\u1ec7m \u0111\u1ed9 c\u1ee9ng (HV, HB, HR), n\u0103ng l\u01b0\u1ee3ng va \u0111\u1eadp \u1edf -20\u00b0C \u0111\u1ed1i v\u1edbi \u0111\u01b0\u1eddng k\u00ednh d \u2265 16 mm, v\u00e0 ki\u1ec3m tra khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t theo ti\u00eau chu\u1ea9n GB\/T 5779.1 ho\u1eb7c 5779.3.<\/dd>\n<dt style=\"font-weight: bold; margin-top: 10px;\">6. C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y c\u00f3 \u00e1p d\u1ee5ng cho c\u00e1c lo\u1ea1i \u1ed1c v\u00edt c\u00f3 ren m\u1ecbn kh\u00f4ng?<\/dt>\n<dd style=\"margin-left: 20px;\">\u0110\u00fang v\u1eady, B\u1ea3ng 6 v\u00e0 7 cung c\u1ea5p t\u1ea3i tr\u1ecdng k\u00e9o t\u1ed1i thi\u1ec3u v\u00e0 t\u1ea3i tr\u1ecdng gi\u1edbi h\u1ea1n \u0111\u00e0n h\u1ed3i cho c\u00e1c s\u1ee3i m\u1ea3nh, \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n t\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ee3i th\u00f4.<\/dd>\n<\/dl>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>GB\/T 3098.1-2010 specifies the mechanical properties of bolts, screws, and studs made of carbon steel and alloy steel. This standard defines property classes, materials, and performance requirements to ensure reliability in various applications. It applies to fasteners with nominal thread diameters from M1.6 to M39, operating at temperatures between -50\u00b0C and +300\u00b0C, with core provisions [&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-5559","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5559","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/comments?post=5559"}],"version-history":[{"count":1,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5559\/revisions"}],"predecessor-version":[{"id":5560,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5559\/revisions\/5560"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5559"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}