1) Grade: 1.2738 / 718H / P20+Ni Plastic mould steel block 2) Specification: 120-800mm * 200-1900mm 3) Q+T ... dies for thermo-plastics, blow moulds, forming tools, machine components.Steel Grade: GB 3Cr2NiMo, % C Si Mn P S Cr Mo ... 80 - 2,100,15 - 0,250.90 – 1.20Similar grade: AISI-P20+Ni,718,M238Hardening : 1050 - 850 °C (oil)Delivery Condition ... size 20x 50mm ,Max Size, 400x 500mm P20+Ni/ 718 mould steel