High-Speed Tool Steel
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 1.25 | 1.40 | ||
| Si | 0.20 | 0.45 | ||
| Mn | 0.15 | 0.40 | ||
| P | - | 0.030 | ||
| S | - | 0.030 | ||
| Cr | 3.75 | 4.75 | ||
| Mo | 4.25 | 5.50 | ||
| V | 3.75 | 4.50 | ||
| W | 5.25 | 6.50 | ||
| Co | - | - |
High-Speed Tool Steel
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 787 (≥) | 266 (≥) | 41 | 21 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 312 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 144 (≥) | 583 (≥) | 44 | 31 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 243 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 221 | 761 | 769 |
We can customize the production of M4 grade, contact us for the best solution.
–sales@specificsteel.com