Factory No. 818H Supplier Factory condition and hardness Pre-hardened to HB 330 - 370 Typical main chemical ingredient Ingredients Carbon Silicon Chrome Nickel Manganese Molybdenum The results (%) Percentage 0.38 0.3 2 1 1.4 0.2 Steel properties Pre-hardened pure uniform, approximately 1.0% nickel Steels for general purposes And the high polish of the modules in the high requirements for PA, POM, PS, PE, PP, ABS plastic mold Tempering temperature and hardness control 180 ℃ 225 ℃ 300 ℃ 570 ℃ 610 ℃ |