Quick Detail
Place of Origin
HS-CODE
72-
Package & Delivery Lead Time
Detailed Description
Performance Characteristics:
Air-cooled hardening hot work die steel. good toughness, thermal fatigue resistance and abrasion resistance, and high hardenability.
Applications:
hot extrusion moulds and mandrels、forging mould of die-casting hammer; high-speed precision forging mould with inserts; die forging presses mould as well aluminum alloy die-casting mould, etc.
Chemical Composition(%):
C ：0.32～0.45 Si：0.80～1.20
Mn：0.20～0.50 S ：≤0.030
P ：≤0.030 Cr：4.75～5.50
Ni： ≤0.25 Cu： ≤0.30
V ：0.80～1.20 Mo：1.10～1.75
Process:
EAF+LF+VD+ESR+ Forged+ Annealed+Grinded/Machined
Annealed: 860-890°C, hardness ≤229HB
Quenching: 1020-1050°C, oil cooling or air cooling
Tempering: 560-580°C, hardness: 47-49HRC, twice tempering
Surface condition: black , grinded or machined/ turned.
Inspection: ultrasonic test, according to SEP1921 D/d or as your requirements.
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