Comparison Table of Structural Alloy Steel Grades

Structural alloy steel has higher tensile strength, fatigue strength, ductility and toughness. Structural alloy steel castings are used for machine tool parts, ship parts, vehicle parts and aircraft parts, etc.

The following is the main content of normal structural alloy steel grades. Our Dandong Foundry hope this comparison table of materials to be helpful to the buyers and suppliers of steel castings.

China	America	Japan	Germany	British	France	Russia	International standard
GB	AST	JIS	DIN/DINEN	BS/BSEN	NF/NFEN	ГOCT	ISO 630
20Mn2	1524	SMn420	P355GH	0355GH	P0355GH	--	22Mn6
15Cr	5115	SCr415	17Cr3	527A17	--	15x	--
20Cr	5120	SCr420	20Cr4	20Cr4	--	20x	20Cr4
30Cr	5130	SCr430	34Cr4	34Cr4	34Cr4	30x	34Cr4
40Cr	5140	SCr440	41Cr4	41Cr4	41Cr4	40x	41Cr4
45Cr	5145	SCr445	41Cr4	41Cr4	41Cr4	45x	41Cr4
30CrMo	4130	SCM430	25CrMo4	25CrMo4	25CrMo4	30xM	25CrMo4
35CrMo	4317	SCM435	34CrMo4	34CrMo4	34CrMo4	35xM	34CrMo4
42CrMo	4140	SCM440	42CrMo4	42CrMo4	42CrMo4	38xM	42CrMo4
38CrMoA1	--	SCM645	41CrA1Mo7	905M39	--	38x2MIoA	41CrA1Mo7
50CrVA	6150	SCP10	51CrV4	51CrV4	51CrV4	50xФA	51CrV4
40CrMnMo	4140 4142	SCM440	42CrMo4	42CrMo4 708Mn40	42CrMo4	--	42CrMo4