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Standard |
DIN 42CrMo4/1.7225/ ASTM 4140 |
|---|---|
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Size Mm |
Round Bar:dia 20-500mm Flat bar:thickness:20-28 width:80-300 thickness:30-40 width:80-450 thickness:50-300 width:80-610 |
|
Description |
This steel has high performance of cementation steel ,high hardenability ,after carburizing and quenching has the appearance of rigidity and wear-resistant ,the diligency of corn.It also has higher low-temperature impact ductility ,medium weldability ,after normalizing has good machinability .It used to making the high-speed ,middle-speed or heavy lift of section <30mm , the important parts of concussion and attrition,such as gear, gear ring,the crosshead of gear shaft and so on . |
|
Chemical Composition |
C: 0.38-0.43%; Si:0.2-0.35 ;Mn: 0.8-1.05%; Cr:0.9-1.2%; Mo: 0.08-0.15%;P,S:Max0.04% |
