It is Suitable for high-speed hammer forging dies. Aluminum and magnesium alloy hot forging dies, the hardness is 42-50HRC. Forging die for ferrous metal, the hardness is 40-50HRC. It is suitable for hot work die steel with greater risk of cracking. The die life of the die steel can be 1.5 to 3 times that of 5CrNiMo steel.
Heat treatment process:
Spheroidizing annealing: 860-890℃*3h furnace cooling, 730-750℃*4h isothermal, furnace cooling to below 550℃, air cooling. Preheating: 600-650℃*2.Oh+ 830-850℃*2.Oh. Quenching: 1000-1030℃*1.0h out of the furnace and oil-cooled, when the workpiece is smoking and not igniting, take out the air-cooled. Tempering: 530-560℃*2.5h, out of the furnace and air cooling three times