H22
USA ASTM H22 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 | H22 | ASTM | USA | Hot-Work Tool Steel |
Chemical composition(mass fraction)(wt.%) of the H22
| C | Si | Mn | P | S | Cr | Mo | V | W | Ni＋Cu |
|---|---|---|---|---|---|---|---|---|---|
| 0.30 -0.40 | 0.15 -0.40 | 0.15 -0.40 | ≤0.030 | ≤0.030 | 1.75 -3.75 | ≤ ≥ | 0.25 -0.50 | 10.00 -11.75 | ≤0.75 |
Mechanical Properties of steel grade H22
| 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) |
|---|---|---|---|---|---|---|
| 475 (≥) | 941 (≥) | 44 | 34 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 134 |
Physical Properties of steel grade H22
| 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 |
|---|---|---|---|---|---|---|---|
| 31 | – | – | 0.14 | – | |||
| 743 | 256 | – | 31.3 | 111 | – | ||
| 831 | – | 14 | 33.2 | 431 | 343 |
Heat Treatment of steel grade H22
Heat treated : 1326°C – 1978°C
Technological Curves of steel grade H22
No Curve