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牌号对照 · GB/T 20878 · UNS · JIS · 304 · 316L

不锈钢牌号对照:GB/T 20878、EN 10088、ASTM/UNS 与 JIS 怎么看

同一材料在不同标准体系下写法不同。304 对应 GB 06Cr19Ni10、EN 1.4301、UNS S30400、JIS SUS304;核对时以成分与性能为准。
不锈钢牌号在国标(GB/T 20878)、欧标(EN 10088)、美标(ASTM/UNS)与日标(JIS)中写法不同,常见对照如下:
| 类别 | GB | EN | UNS/ASTM | JIS | |---|---|---|---|---| | 304 | 06Cr19Ni10 | 1.4301 | S30400 / 304 | SUS304 | | 304L | 022Cr19Ni10 | 1.4306/1.4307 | S30403 / 304L | SUS304L | | 316L | 022Cr17Ni12Mo2 | 1.4404 | S31603 / 316L | SUS316L | | 316Ti | 06Cr17Ni12Mo2Ti | 1.4571 | S31635 / 316Ti | SUS316Ti | | 321 | 06Cr18Ni11Ti | 1.4541 | S32100 / 321 | SUS321 | | 2205 | 022Cr23Ni5Mo3N | 1.4462 | S32205 / 2205 | SUS329J3L | | 430 | 10Cr17 | 1.4016 | S43000 / 430 | SUS430 |
使用提醒:
1) 对照表用于快速沟通,不等于可直接互换;不同体系对 C、Ni、Mo 的范围与偏差要求不同; 2) 部分"近似"牌号(如 1.4306 与 304L)成分下限不同,深冲或焊接件要特别注意; 3) 报价与质保书应同时给出标准体系与牌号写法,例如 "316L, UNS S31603, per ASTM A240"。
一张对照表解决"说的是不是同一种钢",但合格与否仍以合同标准与实测为准。
Compiled by SteelWe editors and industry experts. For industry exchange only; not trading or investment advice. Cite the source when quoting.
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