CrWMn chemical composition and mechanical properties

Chemical composition

CrWMn chemical composition of steel (GB / T 1229-2000) w /%
Carbon C: 0.90 ~ 1.05
Silicon Si: ≤ 0.40
Manganese Mn: 0.80 ~ 1.10
Sulfur S: ≤ 0.03
Phosphorus P: ≤ 0.03
Chromium Cr: 0.90 ~ 1.20
Ni: to allow the residual content of ≤ 0.25
Cu: to allow the residual content of ≤ 0.30
Tungsten W: 1.20 ~ 1.60

Mechanical Properties

Hardness: annealing, 255 ~ 207HB, indentation diameter 3.8 ~ 4.2mm; quenching, ≥ 62HRC
Heat treatment and microstructure specifications:
Heat treatment specifications: quenching, 800 ~ 830 ℃ oil cooling.
Delivery status: Delivery of steel in annealed condition.