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.