Material Code Cross Reference

Carbon Steel
China	Equal to			Chemical Components %							Mechanical Properties
	USA	Japan	Germany	C	Si	Mn	P	S	Cr	Ni	Σs(Mpa)	Σb(Mpa)	δ5(%)	Ψ(%)	AK(j)
							≤				≥
A3 (Q235A)	ASTM A283M Gr.D	SS400, SM400A	-	0.14-0.22	≤0.3	0.3-0.65	0.045	0.05	TBA	TBA	235	375-500	26	TBA
20#	1020	S20C	CK22	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	0.25	0.25	245	410	25	55
35#	1035	S35C	CK35	0.32-0.40	0.17-0.37	0.50-0.80	0.035	0.035	0.25	0.25	315	530	20	45	55
45#	1045	S45C	CK45	0.42-0.50	0.17-0.37	0.50-0.80	0.035	0.035	0.25	0.25	355	600	16	40	39
20Mn	1022			0.17-0.24	0.17-0.37	0.70-1.00	0.035	0.035	0.25	0.25	275	450	24	50
Alloy Steel
China	Equal to
	USA	Japan	Germany	C	Si	Mn	Mo	Cr	Ni	Σs(Mpa)	Σb(Mpa)	δ5(%)	Ψ(%)	AK(j
20Cr	5120	SCr420	20Cr4	0.18-0.24	0.17-0.37	0.50-0.80		0.70-1.00		540	835	10	40	47
40Cr	5140	SCr440	41Cr4	0.37-0.44	0.17-0.37	0.50-0.80		0.80-1.10		785	980	9	45	47
20CrMo	4118	SCM420	20CrMo5	0.17-0.24	0.17-0.37	0.40-0.70	0.15-0.25	0.80-1.10		685	885	12	50	78
35CrMo	4135	SCM435	34CrMo5	0.32-0.40	0.17-0.37	0.40-0.70	0.15-0.25	0.80-1.10		835	980	12	45	63
42CrMo	4140	SCM440	42CrMo4	0.38-0.45	0.17-0.37	0.50-0.80	0.15-0.25	0.90-1.20		930	1080	12	45	63
20CrMnTi				0.17-0.23	0.17-0.37	0.80-1.10		1.00-1.30	(Ti)0.04-0.10	835	1080	10	45	55
Cold Forged Steel
China	Equal to			Chemical Components %
	USA	Japan	Germany	C	Si	Mn	Cr	Mo	S	P
ML25	1025	SWRCH25K		0.22-0.30	≤0.20	0.30-0.60			≤0.035	≤0.035
ML30	1030	SWRCH30K		0.27-0.35	≤0.20	0.30-0.60			≤0.035	≤0.035
ML35	1034	SWRCH35K	Cq35C35C	0.32-0.40	≤0.20	0.30-0.60			≤0.035	≤0.035
ML40	1040	SWRCH38K		0.37-0.45	≤0.20	0.30-0.60			≤0.035	≤0.035
ML45	1044	SWRCH45K	Cq45	0.42-0.50	≤0.20	0.30-0.60			≤0.035	≤0.035
ML20Cr	5120			0.17-0.24	≤0.30	0.50-0.80	0.70-1.00		≤0.035	≤0.035
ML40Cr	5140		41Cr4	0.37-0.44	≤0.30	0.50-0.80	0.80-1.10		≤0.035	≤0.035
ML35CrMo	4135		34CrMo4	0.32-0.40	≤0.30	0.40-0.70	0.80-1.10	0.15-0.25	≤0.035	≤0.035