USA ASTM H12 Tool Die Steels Hot-Work Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Tool Die Steels | H12 | ASTM | USA | Hot-Work Tool Steel | 
| C | Si | Mn | P | S | Cr | Mo | V | W | Ni+Cu | 
|---|---|---|---|---|---|---|---|---|---|
| 0.30 -0.40 | 0.80 -1.20 | 0.20 -0.50 | ≤0.030 | ≤0.030 | 4.75 -5.50 | 1.25 -1.75 | 0.20 -0.50 | 1.00 -1.70 | ≤0.75 | 
| 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) | 
|---|---|---|---|---|---|---|
| 617 (≥) | 358 (≥) | 41 | 14 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 132 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 34 | - | - | 0.22 | - | |||
| 264 | 983 | - | 12.3 | 213 | - | ||
| 539 | - | 31 | 13.2 | 233 | 331 | 
Heat treated : 1125°C - 1578°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| ASTM H12 | |||
| AWS EH12K | |||
| SWRCH12R | |||
| SWRCH12A | |||
| SWRCH12K | |||
| SCH12 | |||
| H12 | |||
| BH12 | |||
| BH12 | |||
| 15X18H12C4TЮ | |||
| 03X18H12 | |||
| 03X18H12T | |||
| 12X18H12T | |||
| 08X18H12Б | 
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