1. High wear resistance, if the mold is not wear-resistant, it is easy to cause excessive wear of the cavity.
2. High corrosion resistance, many additives of plastics, such as flame retardant, even the chemical action of the capacity itself will corrode the mold cavity.
3. Good thermal conductivity, good mold temperature control has great influence on the quality of plastic parts during injection molding, especially when processing semi-crystalline thermal plastic parts.Generally, copper alloy has better thermal conductivity than copper alloy, but its elastic modulus, hardness and durability are lower.The thermal conductivity of the steel can be compensated by the cooling system.
4. Good dimensional stability, in the forming operation of injection moulds, the mould cavity while curing temperature to reach more than 300 degrees, temperature difference is so big, easy to make the improperness microscopic structure change, thus zhao mold size change, make the plastic parts size is not stable.
5. Polishing performance is good, high demand for the inner wall of the mould cavity while curing, the roughness is very small, to adapt the demand of plastics surface glossiness good, to this, the cavity generally must carry on the polishing processing, surface as bright as possible, therefore, request mould material is easy to polish, so choose the material should not have impurities and defects such as porosity.