alloy steel round barstandard:Chinese GB,ASTM, DINMaterial:42CrMo,42CrMo4,4040diameter:12-400mm length:6m or morefor industry,etc
application:gear,backshaft,drill pipe,mould
and etc
chemical composition:
C: 0.38-0.45
Si: 0.17~0.37
Mn: 0.50~0.80
S: ≤0.035
P:≤0.035
Cr: 0.90~1.20
Ni:≤0.030
Cu:≤0.030
Mo:0.15~0.25
mechanical propertity:
tensile strength:σb (MPa)≥1080(110)
yield strength:σs (MPa)≥930(95)
elongation:σs (MPa)≥930(95)
hardness:≤217HB
sample diameter:25mm
Leading Futures:
Compared with 35CrMo, the 42CrMo has higher intensity and better hardenability for that 42CrMo bears more carbon and chromium. The fatigue strength and impact resistance of 42CrMo are promoted after tempering. The low temperature impact toughness is great and there is no temper brittleness. This kind of material is usually used after being tempered.
Application:
It is often applied for making important machinery parts, such as bearing, gear, connecting rod, transmission gear, supercharger gear, engine cylinder, spring, 1200mm~2000mm rotary shouldered connections for petroleum industry, jar knocker, substitute of hardened and tempered steel with higher chromium composition, which demand higher strength and larger size than 35CrMo.
42CrMo alloy steel round bar