Japan JIS SKD8 Hot-work die steel and SKD8 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Tool Steel And Hard Alloy | SKD8 | JIS | Japan | Hot-work die steel | 
| SKD2 | |||||
| SKD10 | |||||
| SKD11 | |||||
| SKD12 | |||||
| SKD4 | |||||
| SKD5 | |||||
| SKD6 | |||||
| SKD61 | |||||
| SKD62 | |||||
| SKD7 | 
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | V(%) | W(%) | Co(%) | 
|---|---|---|---|---|---|---|---|---|---|
| 0.35-0.45 | 0.15-0.50 | 0.20-0.50 | Max 0.030 | Max 0.020 | 4.00-4.70 | 0.30-0.50 | 1.70-2.10 | 3.80-4.50 | 4.00-4.50 | 
| Yield Rp0.2 (MPa) | Tensile Rm (MPa) | Impact KV/Ku (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | Brinell hardness (HBW) | 
|---|---|---|---|---|---|---|
| 261 (≥) | 251 (≥) | 11 | 24 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 242 | 
| Temperature (°C) | Modulus of elasticity (GPa) | Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) | Specific thermal capacity (J/kg·°C) | Specific electrical resistivity (Ω mm²/m) | Density (kg/dm³) | Poisson’s coefficient, ν | 
|---|---|---|---|---|---|---|---|
| 44 | - | - | 0.14 | - | |||
| 431 | 856 | - | 13.3 | 343 | - | ||
| 727 | - | 33 | 42.2 | 333 | 223 | 
Heat treated : 1672°C - 1487°C
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