合金工具钢
Description:
Uniform microstructure, free cutting and good polishing, High tenacity, ductility and high wear resistance in high temperature, Excellent hardenability and good heat resistance, Small deformation during heat treatment.
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4Cr5MoSiV1 |
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Physical properties:
Modulus of Elasticity (E): 210000MPa。
Coefficient oflinear expansion:
Temperature (℃) Coefficient oflinear expansion (℃-1)
20～100 9.1×10-6
20～200 10.3×10-6
20～300 11.5×10-6
20～400 12.2×10-6
20～500 12.8×10-6
20～600 13.2×10-6
20～700 13.5×10-6
Temperature (℃) thermalconductivity λ/W·(m·K)-1:
25 32.2
650 28.8
Heat treatment:
Quenching, 790℃ preheating, 1000℃ salt bath, holding 5~15 min, air cooling
Tempering: 550℃
Delivery condition:
Annealed
Application:
Widely used for hot extrusion dies, dies for mandrels and forging hammers, die-casting mould for aluminum, copper and its alloys
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