(1) The hardness of about 600 ℃ operating temperature, can still maintain a high hardness. Red hardness of the thermal deformation of steel molds and high-speed cutting tools is very important to performance.
(2) wear resistance with good abrasion resistance, that is the ability to resist wear and tear. Tools to withstand considerable pressure and friction conditions, can still maintain its shape and size unchanged.
(3) strength and toughness has a certain strength and toughness, so that tools can withstand the work load, shock, vibration, and other complex bending stress, in order to ensure the normal use of tools.
(4) has some other properties of high temperature mechanical properties, thermal fatigue resistance, thermal conductivity and wear-corrosion and so on.
Chemical composition
C: 0.95 ~ 1.05 Mn: 0.15 ~ 0.40 Si: ≤ 0.70 S: ≤ 0.030 P: ≤ 0.030 Cr: 3.50 ~ 4.50 V: 1.75 ~ 2.20 W: 1.50 ~ 2.10 Mo: 8.20 ~ 9.20
Smelting method
Should be electric or electro-slag re-melting method of smelting. Smelting method requirements should be specified in the contract, not specified by the supplier selection.
Delivery status
Annealed steel bar to the state of delivery, or after annealing processed by other processing methods of delivery, specific requirements should be specified in the contract.
