9crsi chemical composition

Chemical composition:

Carbon C: 0.85 ~ 0.95
Silicon Si: 1.20 ~ 1.60
Manganese Mn: 0.30 ~ 0.60
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.030
Chromium Cr: 0.95 ~ 1.25
Ni: to allow the residual content of ≤ 0.25
Cu: to allow the residual content of ≤ 0.30

Mechanical properties:

Hardness: annealing, 241 ~ 197HB, indentation diameter 3.9 to 4.3mm; 187 ~ 229HB (manufacturing thread tools); quenching

Fire, ≥ 62HRC

Heat treatment

Heat treatment specifications: of sample quenching 820 ~ 860 ℃, oil cooling.

Delivery status:

Delivery steel in annealed condition.