Alloy tool steel: 5CrNiMo
Standard: GB / T 1299-1985
● Features and Scope:
Hot work die steel, lower content of alloying elements alloy tool steel, but also the traditional hammer forging die steel with good toughness, strength and wear resistance, hardenability, 300 × 300 × 400mm workpiece can hardenability . For the production of complex shapes, heavy shock loading various large and medium forging die (side length> 400mm).
● Chemical Composition:
Carbon C: 0.50 ~ 0.60
Si Si: ≤0.40
Mn Mn: 0.50 ~ 0.80
Sulfur S: ≤0.030
Phosphorus P: ≤0.030
Chromium Cr: 0.50 ~ 0.80
Ni Ni: 1.40 ~ 1.80
Cu: to allow the residual content ≤0.30
Vanadium V: to allow the residual content of <0.2
Mo Mo: 0.15 ~ 0.30
● Mechanical Properties:
Hardness: annealing, 241 ~ 197HB, indentation diameter 3.9 ~ 4.3mm
● Heat treatment and microstructure specifications:
Heat treatment specifications: quenching, 830 ~ 860 ℃ oil cooling.
● Delivery status: Delivery of steel in the annealed condition.