Die steel; mold steel; high-speed steel; permeability steel; tungsten steel; graphite; plastic mold steel; excellent special steel 

 PX88 Japan Datong plastic mold steel, in particular, to improve the weldability of the common plastic mold steel, P20 improved by hardening and tempering to about HB290-330. To welding crack sensitivity of low-alloy components designed to substantially improve the welding performance Quenching temperature: Cooling, tempering temperature and hardness control: 180 ℃ -225 ℃ -300 ℃ -570 ℃ -610 ℃ chemical composition (%): C C: 0.40 Si Si: 0.30 Manganese Mn: 1.45 Chromium Cr: 2.00 Mo Mo: 0.20 Usage: long-term large-scale production of high-quality plastic mold steel, suitable for manufacturing such as the television chassis, refrigerators, washing machines, buckets, etc.