USA SAE SAE J 437 (1970), SAE J 438 (1970), W108 Special Tool Die Steels Tool and die steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Tool Die Steels | W108 Special | SAE | USA | Tool and die steels | 
| C | Si | Mn | Cr | V | 
|---|---|---|---|---|
| 0.70 -0.85 | 0.10 -0.40 | 0.10 -0.40 | ≤ ≥ | ≤ ≥ | 
| 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) | 
|---|---|---|---|---|---|---|
| 992 (≥) | 373 (≥) | 11 | 34 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 222 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 33 | - | - | 0.12 | - | |||
| 686 | 843 | - | 24.3 | 234 | - | ||
| 648 | - | 41 | 31.2 | 214 | 341 | 
Heat treated : 1364°C - 1149°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| AISI W108 Commercial | |||
| SAE W108 Commercial | |||
| ASTM W108 Standard | |||
| ASTM W108 Extra | |||
| ASTM W108 Special | 
| SAE J 437 (1970) | Selection and heat treatment of tool and die steels | SAE-J-437-(1970).pdf | 
| SAE J 438 (1970) | Tool and die steels | SAE-J-438-(1970).pdf | 
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