Steel Type	Standard	Country Code	C(%)	Si(%)	Mn(%)	P(%)	S(%)	Cr(%)	Ni(%)
20MnCr5	17210	DIN	0.17-0.22	≦0.4	1.0-1.4	≦0.035	≦0.035	1.0-1.3
5120	-	AISI	0.17-0.22	0.15-0.30	0.7-0.9	≦0.035	≦0.04
15CrMn	3077	GB	0.12-0.18	0.17-0.37	1.1-1.4	≦0.035	≦0.035	0.4-0.7	≦0.3
5115	-	AISI	0.13-0.16	0.15-0.30	0.7-0.9	≦0.035	≦0.04	0.7-0.9
16MnCr5	17210	DIN	0.14-0.19	0.15-0.40	1.0-1.3	≦0.035	≦0.035	0.8-1.1
SMnC420	4445	CNS	0.17-0.23	0.15-0.35	1.2-1.5	≦0.03	≦0.03	0.35-0.70	≦0.25
20CrMn	3077	GB	0.17-0.23	0.17-0.37	0.9-1.2	≦0.035	≦0.035	0.9-1.2
SMnC420	4106	JIS	0.17-0.23	0.15-0.35	1.2-1.5	≦0.03	≦0.03	0.35-0.70	≦0.25
20CrMnSi	3077	GB	0.17-0.23	0.9-1.2	0.8-1.1	≦0.035	≦0.035	0.8-1.1
30CrMnSi	3077	GB	0.27-0.34	0.9-1.2	0.8-1.1	≦0.035	≦0.035	0.8-1.1	≦0.3