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Material for Core of Cold Heading Dies | ||||||||||||
Grade | WC+Other | Co | Grain Size | Density | Hardness | TRS | ||||||
(±0.5%) | (±0.5%) | (g/cm³) | (HRA)±0.5 | (N/mm²) | ||||||||
KG5 | 88 | 12 | Medium | 14.31 | 88.3 | 340 | ||||||
KG6 | 86 | 14 | Medium | 14.12 | 87.3 | 320 | ||||||
EA65 | 82 | 18 | Coarse | 13.75 | 85 | 300 | ||||||
EA90 | 76 | 24 | Coarse | 13.22 | 82.8 | 270 | ||||||
ST6 | 85 | 15 | Coarse | 13.8 | 86 | 270 | ||||||
ST7 | 80 | 20 | Coarse | 13.4 | 85.3 | 270 | ||||||
VA80 | 80 | 20 | Coarse | 13.58 | 84 | 280 | ||||||
VA90 | 78 | 22 | Coarse | 13.39 | 82.5 | 240 | ||||||
VA95 | 75 | 25 | Coarse | 13.12 | 81.5 | 220 | ||||||
Material for Casing of Cold Heading Dies | ||||||
Material | Hardness (HRC) | Features | Applications | |||
H13 | 59-61 | H13 is a chromium molybdenum hot work steel with exceptional hot hardness and abrasion resistance, general hardness, and toughness. | Used for extrusion dies, forging dies, stamping tools, etc. | |||
SKD11 | 58-61 | SKD11 tool steel has good wear resistance and size ability after heat treatment. | Used for tensile dies, cold extrusion dies, first punch holder, etc. | |||
SKD61 | 43-53 | SKD61 steel is a high-grade die casting die. It has heat shock resistance, heat deformation resistance, heat fatigue resistance. | Used for heat work dies, cold heading dies, second punch holders. | |||










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