24 July 2021 Free-Cutting Steel Bar
20CrH Free Cutting Steel Bar
20CrH is a chemical with a molecular weight of silicon Si.
Chinese name 20CrH Material Name Gear steel 20CrH Carbon C 0.17 ~ 0.23 Silicon Si 0.17 ~ 0.37
Material Name: Gear Steel 20CrH
Chemical composition:
- Carbon C: 0.17 ~ 0.23
- Silicon Si: 0.17 ~ 0.37
- Manganese Mn: 0.50-0.85
- Sulfur: allow residual content ≤ 0.035
- Phosphorus P: allowable residual content ≤ 0.035
- Chromium Cr: 0.070 ~ 1.10
- Nickel Ni: Allowable residual content ≤ 0.030
- Copper Cu: allow residual content ≤ 0.030
Mechanical Properties:
Hardness: annealing or tempering, ≤ 179HB, indentation diameter ≥ 4.5mm
Delivery Status:
Delivery by rolling or forging. According to the demand side can also heat treatment (normalizing, annealing or high temperature tempering) state delivery. Delivery status should be indicated in the contract.