The follwing table shows Chemical Composition of SAE 4140 : Chemical Composition : 4140 Carbon Silicon Manganese Sulphur Phosphorus Chromium Molybdenum Nickel Min % 0.38 0.15 0.75 -- -- 0.80 0.15 -- Max % 0.43 0.30 1.00 0.040 0.035 1.10 0.25 --
The follwing table shows Chemical Composition of SAE 4140 :
Chemical Composition :
4140
Carbon
Silicon
Manganese
Sulphur
Phosphorus
Chromium
Molybdenum
Nickel
Min %
0.38
0.15
0.75
--
0.80
Max %
0.43
0.30
1.00
0.040
0.035
1.10
0.25