Chemical Compositions of Steels

CK45 / SAE 1045 (1.1191)

C	Mn	Si	P	S	Cr	Ni	Cu
0.42-0.50	0.50-0.80	0.40 max	0.035 max	0.015-0.035	0.29 max	0.29 max	0.35 max

42CrMo4 / SAE 4140 (1.7225)

C	Mn	Si	P	S	Cr	Ni	Cu	Mo	Al
0.38-0.43	0.75-1.00	0.15-0.35	0.035 max	0.020-0.040	0.80-1.10	0.30 max	0.35 max	0.15-0.50	0.020-0.050

21NiCrMo2 / SAE 8620 (1.6523)

C	Mn	Si	P	S	Cr	Ni	Cu	Mo	Al
0.18-0.23	0.70-0.90	0.15-0.35	0.035 max	0.035 max	0.40-0.60	0.40-0.70	0.35 max	0.15-0.25	0.020-0.050

16MnCr5 / SAE 5115 (1.7131)

C	Mn	Si	P	S	Cr	Ni	Cu	Mo	W	V
0.14-0.19	1.00-1.30	0.40 max	0.035 max	0.02-0.04	0.80-1.10	0.30 max	0.30 max	0.10 max	0.20 max	0.03 max

41Cr4 / SAE 5140 (1.7035)

C	Mn	Si	P	S	Cr	Ni	Cu
0.38-0.43	0.70-0.90	0.15-0.35	0.03 max	0.04 max	0.90 - 1.10	0.25 max	0.35 max

100CR6 (1.3505)

C	Si	Mn	P	S	Cr	Mo
0,93-1,05	0,15-0,35	0,25-0,45	0,025	0,015	1,35-1,60	0-0,10

4340 /34CrNiMo6 (1,6582)

C	Si	Mn	P	S	Cr	Mo	Ni
0,30-0,38	0-0,40	0,50-0,80	0,035	0,035	1,30-1,70	0,15-0,30	1,30-1,70

14NiCr14

C	Si	Mn	P	S	Cr	Ni
0,14-0,20	≤0,40	0,40-0,70	0,035	0,035	0,60-0,90	3,00-3,50

18CrNiMo7-6 / 17CrNiMo6

C	Si	Mn	P	S	Cr	Mo	Ni
0,15-0,21	≤0,40	0,50-0,90	0,035	0,035	1,50-1,80	0,25-0,35	1,40-1,70

* Chemical compositions may vary according to different country standards.