{"id":5655,"date":"2025-12-23T03:41:05","date_gmt":"2025-12-23T03:41:05","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5655"},"modified":"2025-12-23T03:42:49","modified_gmt":"2025-12-23T03:42:49","slug":"gb-t-3098-25-2020-stainless-nickel-fasteners-guide","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/pt\/blog\/gb-t-3098-25-2020-stainless-nickel-fasteners-guide\/","title":{"rendered":"Guia de fixadores de a\u00e7o inoxid\u00e1vel e n\u00edquel GB\/T 3098.25-2020"},"content":{"rendered":"

Introdu\u00e7\u00e3o \u00e0 norma GB\/T 3098.25-2020<\/h2>\n

A norma GB\/T 3098.25-2020 \u00e9 uma norma nacional cr\u00edtica na China que fornece diretrizes abrangentes para a sele\u00e7\u00e3o de fixadores de a\u00e7o inoxid\u00e1vel e ligas de n\u00edquel com base em suas caracter\u00edsticas de desempenho mec\u00e2nico. Esta norma faz parte da s\u00e9rie GB\/T 3098, que aborda as propriedades mec\u00e2nicas dos fixadores, com foco espec\u00edfico em materiais como a\u00e7os inoxid\u00e1veis \u200b\u200bausten\u00edticos, martens\u00edticos, ferr\u00edticos e duplex, al\u00e9m de ligas de n\u00edquel. Seu principal objetivo \u00e9 auxiliar engenheiros, projetistas e fabricantes na escolha de fixadores adequados para aplica\u00e7\u00f5es que exigem alta resist\u00eancia \u00e0 corros\u00e3o, resist\u00eancia mec\u00e2nica e durabilidade em diversas condi\u00e7\u00f5es ambientais, como ambientes marinhos, de processamento qu\u00edmico e de alta temperatura.<\/p>\n

O escopo desta norma inclui tabelas detalhadas de composi\u00e7\u00e3o qu\u00edmica que descrevem as fra\u00e7\u00f5es de massa de elementos-chave como carbono (C), sil\u00edcio (Si), mangan\u00eas (Mn), f\u00f3sforo (P), enxofre (S), cromo (Cr), molibd\u00eanio (Mo), n\u00edquel (Ni), cobre (Cu), nitrog\u00eanio (N), ni\u00f3bio (Nb) e tit\u00e2nio (Ti). Essas composi\u00e7\u00f5es s\u00e3o referenciadas por c\u00f3digos ISO, grupos de fixadores correspondentes e normas relacionadas para garantir compatibilidade e confiabilidade. Por exemplo, utiliza como refer\u00eancia a GB\/T 3098.6 para parafusos, porcas e pinos de a\u00e7o inoxid\u00e1vel, a GB\/T 3098.15 para porcas e outras normas para aplica\u00e7\u00f5es espec\u00edficas.<\/p>\n

Em termos pr\u00e1ticos, este guia ajuda a mitigar os riscos associados \u00e0 falha do material, especificando composi\u00e7\u00f5es que melhoram propriedades como resist\u00eancia \u00e0 tra\u00e7\u00e3o, limite de escoamento e resist\u00eancia \u00e0 corros\u00e3o intergranular. Inclui tamb\u00e9m notas sobre como evitar adi\u00e7\u00f5es n\u00e3o intencionais de elementos durante a fabrica\u00e7\u00e3o para preservar a t\u00eampera, as propriedades mec\u00e2nicas e a aplicabilidade. Os profissionais de engenharia mec\u00e2nica confiam nesta norma para otimizar a sele\u00e7\u00e3o de fixadores, garantindo a conformidade com normas internacionais equivalentes, como a ISO 3506 e as normas EN.<\/p>\n

Os principais benef\u00edcios incluem maior seguran\u00e7a em conjuntos estruturais, custo-benef\u00edcio por meio da escolha adequada de materiais e melhor desempenho em ambientes agressivos. Por exemplo, as ligas austen\u00edticas s\u00e3o preferidas por suas propriedades n\u00e3o magn\u00e9ticas e conformabilidade, enquanto as ligas duplex oferecem um equil\u00edbrio entre resist\u00eancia mec\u00e2nica e resist\u00eancia \u00e0 corros\u00e3o. Esta norma promove as melhores pr\u00e1ticas em ci\u00eancia dos materiais, enfatizando a import\u00e2ncia da liga precisa para alcan\u00e7ar os resultados mec\u00e2nicos desejados. Ao seguir essas diretrizes, as ind\u00fastrias podem reduzir o tempo de inatividade e os custos de manuten\u00e7\u00e3o associados \u00e0 degrada\u00e7\u00e3o de fixadores.<\/p>\n

Composi\u00e7\u00e3o qu\u00edmica dos a\u00e7os inoxid\u00e1veis \u200b\u200bausten\u00edticos<\/h2>\n

A Tabela 1 da norma GB\/T 3098.25-2020 detalha a composi\u00e7\u00e3o qu\u00edmica dos a\u00e7os inoxid\u00e1veis \u200b\u200bausten\u00edticos, com refer\u00eancia \u00e0s normas GB\/T 3098.6, GB\/T 3098.15, GB\/T 3098.16 e GB\/T 3098.21. Essas composi\u00e7\u00f5es s\u00e3o cruciais para determinar as propriedades mec\u00e2nicas e a resist\u00eancia \u00e0 corros\u00e3o dos fixadores. Os valores s\u00e3o apresentados como fra\u00e7\u00f5es de massa em porcentagem, sendo a maioria limites m\u00e1ximos, a menos que especificados como intervalos ou m\u00ednimos. Os a\u00e7os austen\u00edticos s\u00e3o conhecidos por sua excelente conformabilidade, soldabilidade e resist\u00eancia \u00e0 oxida\u00e7\u00e3o, o que os torna ideais para fixadores em ambientes corrosivos.<\/p>\n

A tabela lista os c\u00f3digos ISO juntamente com as composi\u00e7\u00f5es elementares, incluindo C, Si, Mn, P, S, Cr, Mo, Ni, Cu, N, Nb e Ti, e atribui os grupos de fixadores correspondentes, como A1, A2, A2L, A3, A4, A4L, A5 e A8. Por exemplo, a norma ISO 4305-303-00-I (grupo A1) apresenta C at\u00e9 0,12, Cr entre 17,0 e 19,0 e S \u2265 0,15 para melhor usinabilidade. Essas especifica\u00e7\u00f5es garantem consist\u00eancia no desempenho, como a manuten\u00e7\u00e3o da estrutura austen\u00edtica para propriedades n\u00e3o magn\u00e9ticas.<\/p>\n

As notas enfatizam que elementos n\u00e3o especificados n\u00e3o devem ser adicionados sem o consentimento do comprador, exceto para refino, e que precau\u00e7\u00f5es devem ser tomadas contra contaminantes que afetem as propriedades. Os grupos se alinham de forma pr\u00f3xima, mas n\u00e3o id\u00eantica, com outras normas GB\/T. Esses dados auxiliam na sele\u00e7\u00e3o de materiais para cargas e temperaturas espec\u00edficas, prevenindo problemas como fissura\u00e7\u00e3o por corros\u00e3o sob tens\u00e3o.<\/p>\n

\n
\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
C\u00f3digo ISO<\/th>\nC<\/th>\nSi<\/th>\nMn<\/th>\nP<\/th>\nS<\/th>\nCr<\/th>\nMo<\/th>\nNi<\/th>\nCu<\/th>\nN<\/th>\nNb<\/th>\nTi<\/th>\nGrupo<\/th>\n<\/tr>\n<\/thead>\n
4305-303-00-I<\/td>\n0.12<\/td>\n1<\/td>\n2<\/td>\n0.06<\/td>\n\u22650,15<\/td>\n17.0~19.0<\/td>\n–<\/td>\n8.0~10.0<\/td>\n1<\/td>\n0.1<\/td>\n–<\/td>\n–<\/td>\nA1<\/td>\n<\/tr>\n
4301-304-00-I<\/td>\n0.07<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n17.5~19.5<\/td>\n–<\/td>\n8.0~10.5<\/td>\n–<\/td>\n0.1<\/td>\n–<\/td>\n–<\/td>\nA2<\/td>\n<\/tr>\n
4307-304-03-I<\/td>\n0.03<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n17.5~19.5<\/td>\n–<\/td>\n8.0~10.5<\/td>\n–<\/td>\n0.1<\/td>\n–<\/td>\n–<\/td>\nA2L<\/td>\n<\/tr>\n
4311-304-53-I<\/td>\n0.03<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n17.5~19.5<\/td>\n–<\/td>\n8.0~11.0<\/td>\n–<\/td>\n0.12~0.22<\/td>\n–<\/td>\n–<\/td>\nA2L<\/td>\n<\/tr>\n
4567-304-98-X<\/td>\n0.08<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n17.0~19.0<\/td>\n–<\/td>\n8.0~10.5<\/td>\n1.0~3.0<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nA2<\/td>\n<\/tr>\n
4567-304-30-I<\/td>\n0.04<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n17.0~19.0<\/td>\n–<\/td>\n8.0~10.5<\/td>\n3.0~4.0<\/td>\n0.1<\/td>\n–<\/td>\n–<\/td>\nA3<\/td>\n<\/tr>\n
4541-321-00-I<\/td>\n0.08<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n17.0~19.0<\/td>\n–<\/td>\n9.0~12.0<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n5\u00d7C~0,70<\/td>\nA3<\/td>\n<\/tr>\n
4550-347-00-I<\/td>\n0.08<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n17.0~19.0<\/td>\n–<\/td>\n9.0~12.0<\/td>\n–<\/td>\n–<\/td>\n10\u00d7C~1,00<\/td>\n–<\/td>\nA3<\/td>\n<\/tr>\n
4401-316-00-I<\/td>\n0.08<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n16.0~18.0<\/td>\n2.00~3.00<\/td>\n10.0~13.0<\/td>\n–<\/td>\n0.1<\/td>\n–<\/td>\n–<\/td>\nA4<\/td>\n<\/tr>\n
4404-316-03-I<\/td>\n0.03<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n16.5~18.5<\/td>\n2.00~3.00<\/td>\n10.0~13.0<\/td>\n–<\/td>\n0.1<\/td>\n–<\/td>\n–<\/td>\nA4L<\/td>\n<\/tr>\n
4406-316-53-I<\/td>\n0.03<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n16.5~18.5<\/td>\n2.00~3.00<\/td>\n10.0~12.5<\/td>\n–<\/td>\n0.12~0.22<\/td>\n–<\/td>\n–<\/td>\nA4L<\/td>\n<\/tr>\n
4578-316-76-E<\/td>\n0.04<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.015<\/td>\n16.5~17.5<\/td>\n2.00~2.50<\/td>\n10.0~11.0<\/td>\n3.0~3.5<\/td>\n0.1<\/td>\n–<\/td>\n–<\/td>\nA4<\/td>\n<\/tr>\n
4571-316-35-I<\/td>\n0.08<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n16.5~18.5<\/td>\n2.00~2.50<\/td>\n10.5~13.5<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n5\u00d7C~0,70<\/td>\nA5<\/td>\n<\/tr>\n
4529-089-26-I<\/td>\n0.02<\/td>\n0.75<\/td>\n2<\/td>\n0.035<\/td>\n0.015<\/td>\n19.0~21.0<\/td>\n6.0~7.0<\/td>\n24.0~26.0<\/td>\n0.5~1.5<\/td>\n0.15~0.25<\/td>\n–<\/td>\n–<\/td>\nA8<\/td>\n<\/tr>\n
4547-312-54-I<\/td>\n0.02<\/td>\n0.7<\/td>\n1<\/td>\n0.035<\/td>\n0.015<\/td>\n19.5~20.5<\/td>\n6.0~7.0<\/td>\n17.5~18.5<\/td>\n0.50~1.00<\/td>\n0.18~0.25<\/td>\n–<\/td>\n–<\/td>\nA8<\/td>\n<\/tr>\n
4478-083-67-U<\/td>\n0.03<\/td>\n1<\/td>\n2<\/td>\n0.04<\/td>\n0.03<\/td>\n20.0~22.0<\/td>\n6.0~7.0<\/td>\n23.5~25.5<\/td>\n0.75<\/td>\n0.18~0.25<\/td>\n–<\/td>\n–<\/td>\nA8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Composi\u00e7\u00e3o qu\u00edmica dos a\u00e7os martens\u00edticos, ferr\u00edticos e duplex<\/h2>\n

A Tabela 2 descreve as composi\u00e7\u00f5es qu\u00edmicas dos a\u00e7os inoxid\u00e1veis \u200b\u200bmartens\u00edticos, ferr\u00edticos e duplex, essenciais para fixadores que exigem alta resist\u00eancia e resist\u00eancia moderada \u00e0 corros\u00e3o. Os a\u00e7os martens\u00edticos oferecem temperabilidade por meio de tratamento t\u00e9rmico, os ferr\u00edticos proporcionam boa ductilidade e os duplex combinam fases austen\u00edticas e ferr\u00edticas para resist\u00eancia superior e resist\u00eancia \u00e0 corros\u00e3o por pite.<\/p>\n

Os c\u00f3digos ISO est\u00e3o associados a elementos e grupos como C1, C3, C4, F1, D2, D4, D6 e D8. Para a\u00e7os martens\u00edticos, a norma ISO 4006-410-00-I (C1) apresenta teores de C entre 0,08 e 0,15 e teores de Cr entre 11,5 e 13,5. Exemplos de a\u00e7os duplex incluem a norma ISO 4462-318-03-I (D6), com teores de Cr entre 21,0 e 23,0 e teores de Mo entre 2,5 e 3,5. As notas incluem os requisitos de tungst\u00eanio para determinados c\u00f3digos e os c\u00e1lculos de PREN para reconhecimento de a\u00e7os duplex.<\/p>\n

\n
\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
C\u00f3digo ISO<\/th>\nC<\/th>\nSi<\/th>\nMn<\/th>\nP<\/th>\nS<\/th>\nCr<\/th>\nMo<\/th>\nNi<\/th>\nCu<\/th>\nN<\/th>\nNb<\/th>\nTi<\/th>\nGrupo<\/th>\n<\/tr>\n<\/thead>\n
A\u00e7os inoxid\u00e1veis \u200b\u200bmartens\u00edticos<\/td>\n<\/tr>\n
4006-410-00-I<\/td>\n0.08~0.15<\/td>\n1<\/td>\n1.5<\/td>\n0.04<\/td>\n0.03<\/td>\n11.5~13.5<\/td>\n–<\/td>\n0.75<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nC1<\/td>\n<\/tr>\n
4021-420-00-I<\/td>\n0.16~0.25<\/td>\n1<\/td>\n1.5<\/td>\n0.04<\/td>\n0.03<\/td>\n12.0~14.0<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nC1<\/td>\n<\/tr>\n
4028-420-00-I<\/td>\n0.26~0.35<\/td>\n1<\/td>\n1.5<\/td>\n0.04<\/td>\n0.03<\/td>\n12.0~14.0<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nC1<\/td>\n<\/tr>\n
4057-431-00-X<\/td>\n0.12~0.22<\/td>\n1<\/td>\n1.5<\/td>\n0.04<\/td>\n0.03<\/td>\n15.0~17.0<\/td>\n–<\/td>\n1.50~2.50<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nC3<\/td>\n<\/tr>\n
4005-416-00-I<\/td>\n0.08~0.15<\/td>\n1<\/td>\n1.5<\/td>\n0.04<\/td>\n\u22650,15<\/td>\n12.0~14.0<\/td>\n0.6<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nC4<\/td>\n<\/tr>\n
A\u00e7os inoxid\u00e1veis \u200b\u200bferr\u00edticos<\/td>\n<\/tr>\n
4016-430-00-I<\/td>\n0.08<\/td>\n1<\/td>\n1<\/td>\n0.04<\/td>\n0.03<\/td>\n16.0~18.0<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nF1<\/td>\n<\/tr>\n
A\u00e7os inoxid\u00e1veis \u200b\u200bduplex<\/td>\n<\/tr>\n
4482-320-01-X<\/td>\n0.03<\/td>\n1<\/td>\n4.0~6.0<\/td>\n0.035<\/td>\n0.03<\/td>\n19.5~21.5<\/td>\n0.10~0.60<\/td>\n1.50~3.50<\/td>\n1<\/td>\n0.05~0.20<\/td>\n–<\/td>\n–<\/td>\nD2<\/td>\n<\/tr>\n
4362-323-04-I<\/td>\n0.03<\/td>\n1<\/td>\n2<\/td>\n0.035<\/td>\n0.015<\/td>\n22.0~24.5<\/td>\n0.10~0.60<\/td>\n3.5~5.5<\/td>\n0.10~0.60<\/td>\n0.05~0.20<\/td>\n–<\/td>\n–<\/td>\nD2<\/td>\n<\/tr>\n
4062-322-02-U<\/td>\n0.03<\/td>\n1<\/td>\n2<\/td>\n0.04<\/td>\n0.01<\/td>\n21.5~24.0<\/td>\n0.45<\/td>\n1.00~2.90<\/td>\n–<\/td>\n0.16~0.28<\/td>\n–<\/td>\n–<\/td>\nD4<\/td>\n<\/tr>\n
4162-321-01-E<\/td>\n0.04<\/td>\n1<\/td>\n4.0~6.0<\/td>\n0.04<\/td>\n0.015<\/td>\n21.0~22.0<\/td>\n0.10~0.80<\/td>\n1.35~1.90<\/td>\n0.10~0.80<\/td>\n0.20~0.25<\/td>\n–<\/td>\n–<\/td>\nD4<\/td>\n<\/tr>\n
4662-824-41-X<\/td>\n0.03<\/td>\n0.7<\/td>\n2.50~4.0<\/td>\n0.035<\/td>\n0.005<\/td>\n23.0~25.0<\/td>\n1.00~2.00<\/td>\n3.0~4.5<\/td>\n0.10~0.80<\/td>\n0.20~0.30<\/td>\n–<\/td>\n–<\/td>\nD4<\/td>\n<\/tr>\n
4462-318-03-I<\/td>\n0.03<\/td>\n1<\/td>\n2<\/td>\n0.035<\/td>\n0.015<\/td>\n21.0~23.0<\/td>\n2.5~3.5<\/td>\n4.5~6.5<\/td>\n–<\/td>\n0.10~0.22<\/td>\n–<\/td>\n–<\/td>\nD6<\/td>\n<\/tr>\n
4481-312-60-J<\/td>\n0.03<\/td>\n1<\/td>\n1.5<\/td>\n0.04<\/td>\n0.03<\/td>\n24.0~26.0<\/td>\n2.5~3.5<\/td>\n5.5~7.5<\/td>\n–<\/td>\n0.08~0.30<\/td>\n–<\/td>\n–<\/td>\nD6<\/td>\n<\/tr>\n
4410-327-50-E<\/td>\n0.03<\/td>\n1<\/td>\n2<\/td>\n0.035<\/td>\n0.015<\/td>\n24.0~26.0<\/td>\n3.0~4.5<\/td>\n6.0~8.0<\/td>\n–<\/td>\n0.24~0.35<\/td>\n–<\/td>\n–<\/td>\nD8<\/td>\n<\/tr>\n
4501-327-60-I<\/td>\n0.03<\/td>\n1<\/td>\n1<\/td>\n0.03<\/td>\n0.01<\/td>\n24.0~26.0<\/td>\n3.0~4.0<\/td>\n6.0~8.0<\/td>\n0.5~1.0<\/td>\n0.20~0.30<\/td>\n–<\/td>\n–<\/td>\nD8<\/td>\n<\/tr>\n
4507-325-20-I<\/td>\n0.03<\/td>\n0.7<\/td>\n2<\/td>\n0.035<\/td>\n0.015<\/td>\n24.0~26.0<\/td>\n3.0~4.0<\/td>\n6.0~8.0<\/td>\n1.0~2.5<\/td>\n0.20~0.30<\/td>\n–<\/td>\n–<\/td>\nD8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Composi\u00e7\u00e3o qu\u00edmica de a\u00e7os inoxid\u00e1veis \u200b\u200be ligas de n\u00edquel para altas temperaturas<\/h2>\n

A Tabela 3 apresenta composi\u00e7\u00f5es para aplica\u00e7\u00f5es em altas temperaturas, incluindo a\u00e7os martens\u00edticos e a\u00e7os austen\u00edticos de endurecimento por precipita\u00e7\u00e3o com ligas de n\u00edquel. Esses materiais s\u00e3o projetados para temperaturas elevadas, oferecendo resist\u00eancia \u00e0 flu\u00eancia e prote\u00e7\u00e3o contra oxida\u00e7\u00e3o.<\/p>\n

Os grupos incluem CH0, CH1, CH2, V ou VH, VW, SD, SB e 718. Para a liga de n\u00edquel 2,4668 (718), o teor de C varia de 0,02 a 0,08, com altos teores de Ni (50,00 a 55,00) e Mo (2,80 a 3,30). As notas detalham elementos adicionais como V, Al, B, Co, Fe e Nb para c\u00f3digos espec\u00edficos.<\/p>\n

\n
\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
C\u00f3digo ISO<\/th>\nC<\/th>\nSi<\/th>\nMn<\/th>\nP<\/th>\nS<\/th>\nCr<\/th>\nMo<\/th>\nNi<\/th>\nCu<\/th>\nN<\/th>\nNb<\/th>\nTi<\/th>\nGrupo<\/th>\n<\/tr>\n<\/thead>\n
A\u00e7os inoxid\u00e1veis \u200b\u200bmartens\u00edticos<\/td>\n<\/tr>\n
4021-420-00-I<\/td>\n0.16~0.25<\/td>\n1<\/td>\n1.5<\/td>\n0.04<\/td>\n0.03<\/td>\n12.0~14.0<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nCH0<\/td>\n<\/tr>\n
4028-420-00-I<\/td>\n0.26~0.35<\/td>\n1<\/td>\n1.5<\/td>\n0.04<\/td>\n0.03<\/td>\n12.0~14.0<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nCH1<\/td>\n<\/tr>\n
4057-431-00-X<\/td>\n0.12~0.22<\/td>\n1<\/td>\n1.5<\/td>\n0.04<\/td>\n0.03<\/td>\n15.0~17.0<\/td>\n–<\/td>\n1.50~2.5<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nCH2<\/td>\n<\/tr>\n
4923-422-77-E<\/td>\n0.18~0.24<\/td>\n0.5<\/td>\n0.40~0.90<\/td>\n0.025<\/td>\n0.015<\/td>\n11.0~12.5<\/td>\n0.8~1.2<\/td>\n0.30~0.80<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nV ou VH<\/td>\n<\/tr>\n
1.4913<\/td>\n0.17~0.23<\/td>\n0.5<\/td>\n0.40~0.90<\/td>\n0.025<\/td>\n0.015<\/td>\n10.0~11.5<\/td>\n0.50~0.80<\/td>\n0.20~0.60<\/td>\n–<\/td>\n0.05~0.10<\/td>\n0.25~0.55<\/td>\n–<\/td>\nVW<\/td>\n<\/tr>\n
A\u00e7os inoxid\u00e1veis \u200b\u200be ligas de n\u00edquel endurecidos por precipita\u00e7\u00e3o austen\u00edtica<\/td>\n<\/tr>\n
4980-662-86-X<\/td>\n0.08<\/td>\n1<\/td>\n2<\/td>\n0.04<\/td>\n0.03<\/td>\n13.5~16.0<\/td>\n1.0~1.5<\/td>\n24.0~27.0<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n1.90~2.35<\/td>\nSD<\/td>\n<\/tr>\n
2.4952<\/td>\n0.04~0.10<\/td>\n1<\/td>\n1<\/td>\n0.02<\/td>\n0.015<\/td>\n18.0~21.0<\/td>\n–<\/td>\n\u226565<\/td>\n0.2<\/td>\n–<\/td>\n–<\/td>\n1.80~2.70<\/td>\nSB<\/td>\n<\/tr>\n
2.4668<\/td>\n0.02~0.08<\/td>\n0.035<\/td>\n0.035<\/td>\n0.015<\/td>\n0.015<\/td>\n17.0~21.0<\/td>\n2.80~3.30<\/td>\n50.00~55.00<\/td>\n0.3<\/td>\n–<\/td>\n–<\/td>\n0.60~1.20<\/td>\n718<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Classes comuns para fixadores de conforma\u00e7\u00e3o a frio \u2013 Austen\u00edticos<\/h2>\n

A Tabela A.1 lista as classes austen\u00edticas comuns para fixadores conformados a frio, com refer\u00eancias cruzadas a categorias, grupos, c\u00f3digos ISO, designa\u00e7\u00f5es europeias, c\u00f3digos ASTM, nomes comuns nos EUA, posi\u00e7\u00f5es GB\/T, c\u00f3digos GB\/T 20878 e normas relacionadas. Isso auxilia na sele\u00e7\u00e3o de materiais para a produ\u00e7\u00e3o em larga escala de parafusos e porcas.<\/p>\n

\n
\n
\n
<\/div>\n<\/div>\n
\n
<\/div>\n\n\n\n\n\n\n\n
Categoria<\/th>\nGrupo<\/th>\nC\u00f3digo ISO<\/th>\nC\u00f3digo Europeu<\/th>\nGrau Europeu<\/th>\nC\u00f3digo ASTM<\/th>\nNome dos EUA<\/th>\nPosi\u00e7\u00e3o GB\/T<\/th>\nC\u00f3digo GB\/T 20878<\/th>\nNormas relacionadas<\/th>\n<\/tr>\n<\/thead>\n
Austen\u00edtico sulfurizado<\/td>\nA1<\/td>\n4305-303-00-I<\/td>\n1.4305<\/td>\nX8CrNiS18-9<\/td>\nS30300<\/td>\n303<\/td>\nCap\u00edtulo 5, Tabela 1<\/td>\nS30317<\/td>\nASTM A959, EN 10088-3<\/td>\n<\/tr>\n
A1<\/td>\n4570-303-31-I<\/td>\n1.457<\/td>\nX6CrNiCuS18-9-2<\/td>\nS30331<\/td>\n303Cu<\/td>\nGB\/T 3098,6 GB\/T 3098,15<\/td>\n–<\/td>\nEN 10088-3<\/td>\n<\/tr>\n
Austen\u00edtico de uso geral<\/td>\nA2L<\/td>\n4307-304-03-I<\/td>\n1.4307<\/td>\nX2CrNi18-9<\/td>\nS30403<\/td>\n304L<\/td>\nCap\u00edtulo 5, Tabela 1<\/td>\nS30403<\/td>\nASTM A959, EN 10088-3, EN 10263-5, EN 10269<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

","protected":false},"excerpt":{"rendered":"

Introduction to the GB\/T 3098.25-2020 Standard GB\/T 3098.25-2020 is a critical national standard in China that provides a comprehensive guideline for the selection of stainless steel and nickel alloy fasteners based on their mechanical performance characteristics. This standard is part of the broader GB\/T 3098 series, which addresses mechanical properties of fasteners, and it specifically […]<\/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":[1],"tags":[],"class_list":["post-5655","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts\/5655","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/comments?post=5655"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts\/5655\/revisions"}],"predecessor-version":[{"id":5657,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts\/5655\/revisions\/5657"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/media?parent=5655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/categories?post=5655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/tags?post=5655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}