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How To Match Alloy Steel Codes in China: ASTM, GB, JIS, DIN

Views: 0 Author: Site Editor Publish Time: 2026-06-01 Origin: Site

Steel material codes vary significantly by region. As a global supplier, we’ve compiled a cross-reference table to help you clearly match different code systems. Find your required material’s correct code below.

中国 GB/T 3077	美国 ASTM/SAE/AISI	日本 JIS	德国 DIN (W-Nr.)	英国 BS 970	ISO
铬钢（Cr）
20Cr	5120 / 5120H	SCr420 (SCr22)	20Cr4 (1.7027)	527M20	20Cr4
40Cr	5140 / 5140H	SCr440 (SCr4)	41Cr4 (1.7035)	530A40	41Cr4
45Cr	5145 / 5145H	SCr445	45Cr4 (1.7039)	—	45Cr4
铬钼钢（Cr-Mo）
20CrMo	4118 / 4118H	SCM418	20CrMo5 (1.7264)	CDS12	20CrMo4
30CrMo	4130 / 4130H	SCM430	25CrMo4 (1.7218)	CDS110	25CrMo4
35CrMo	4135 / 4135H	SCM435	34CrMo4 (1.7220)	708A37	34CrMo4
42CrMo	4140 / 4140H	SCM440 (SCM4)	42CrMo4 (1.7225)	708M40	42CrMo4
铬锰钛钢（Cr-Mn-Ti）
20CrMn	5120	SCM420	20MnCr5 (1.7147)	—	20MnCr5
20CrMnTi	5120H	SMK22	20MnCr5 (渗碳用)	—	—
铬钒钢（Cr-V）
40CrV	6140	SUP10	40CrV6 (1.7742)	735A50	40CrV5
铬镍钢（Cr-Ni）
40CrNi	3140	SNC236	40NiCr6 (1.5714)	—	40NiCr6
40CrNiMo	4340	SNCM439	40NiCrMo6 (1.6565)	817M40	40NiCrMo6
硼钢（B）
20Mn2B	14B20	SMnB420	20MnB5 (1.5535)	—	20MnB5