Alloy tool steel: 6W6Mo5Cr4V
Standard: GB / T 1299-1985
● Features and Scope:
Types of low-carbon high-speed steel cold work die steel, high speed steel toughness than the good. As the cold extrusion of steel, a higher life. This steel is easy to decarbonization. Mainly used for cold extrusion die, the upper and lower red top mold.
● Chemical Composition:
Carbon C: 0.55 ~ 0.65
Si Si: ≤0.40
Manganese Mn: ≤0.60
Sulfur S: ≤0.030
Phosphorus P: ≤0.030
Chromium Cr: 3.70 ~ 4.30
Ni: to allow the residual content ≤0.25
Cu: to allow the residual content ≤0.30
Vanadium V: 0.70 ~ 1.10
Mo Mo: 4.50 ~ 5.50
Tungsten W: 6.00 ~ 7.00
● Mechanical Properties:
Hardness: annealing, ≤269HB, indentation diameter ≥3.7mm; quenching, ≥60HRC
● Heat treatment and microstructure specifications:
Heat treatment specifications: quenching, 1180 ~ 1200 ℃ oil cooling.
● Delivery status: Delivery of steel in the annealed condition.