Material Name: Gear Steel 20CrH
● Chemical Composition:
Carbon C: 0.17 ~ 0.23
Si Si: 0.17 ~ 0.37
Mn Mn: 0.50 ~ 0.85
Sulfur S: to allow the residual content ≤0.035
Phosphorus P: to allow the residual content ≤0.035
Chromium Cr: 0.070 ~ 1.10
Ni: to allow the residual content ≤0.030
Cu: to allow the residual content ≤0.030
● Mechanical Properties:
Hardness: annealing or tempering, ≤179HB, indentation diameter ≥4.5mm
● Heat treatment and microstructure specifications:
● Delivery status: to rolling or forging state delivery. According to the requirements can also heat treatment (normalizing, annealing or tempering) state delivery. Delivery status should be specified in the contract. |
