Высококачественное износостойкое опорное колесо

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Stainless Steel Forgings Ring
Carbon Steel Forgings Ring
Monel K500 Forging


Product Description


Product Description:
40Cr is the standard steel grade of GB in my country. 40Cr steel is one of the most widely used steels in the machinery manufacturing industry. After quenching and tempering, it has good comprehensive mechanical properties, good low-temperature impact toughness and low notch sensitivity. The steel has good hardenability. It can be hardened to φ28~60mm when quenched in water and φ15~40mm when quenched in oil. In addition to quenching and tempering, this steel is also suitable for cyaniding and high-frequency quenching. The cutting performance is good. When the hardness is 174~229HB, the relative cutting processability is 60%. This steel is suitable for making medium-sized plastic molds.


Chemical composition %
C
Si
Mn
Cr
P
S
Ni
Cu
40Cr
0.37-0.44
0.17-0.37
0.50-0.80
0.80-1.10
≤0.03
≤0.03
≤0.3
≤0.3


Tensile Strength R[MPa]
≥980
Lower Yield Strength R[MPa]
≥785
Elongation After Fracture A[%]
≥9
Shrinkage of Area Z[%]
≥45
Impact Absorption Energy KVz[J]
≥47


Heat treatment:
Quenching heating temperature/℃:850, coolant; oil
Tempering heating temperature/℃:520, coolant: water, oil

Mechanical properties:
Annealing, hardness [HB]:≤207
Specimen blank size: 25mm


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