1) Grade: 1.2738 / 718H / P20+Ni Plastic mould steel block 2) Specification: 120-800mm * 200-1900mm ... thermo-plastics, blow moulds, forming tools, machine components.Steel Grade: GB 3Cr2NiMo, % C Si Mn P S ... - 2,000,30 - 0,550.85 – 1.15DIN- 1.2738 % C Si Mn P S Cr Mo ... 0351,80 - 2,100,15 - 0,250.90 – 1.20Similar grade: AISI-P20+Ni,718,M238Hardening : 1050 - ... Max Size, 400x 500mm P20+Ni/ 718 mould steel