High-Speed Tool Steel
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 1.10 | 1.20 | ||
| Si | 0.30 | 0.55 | ||
| Mn | 0.20 | 0.40 | ||
| P | - | 0.030 | ||
| S | - | 0.030 | ||
| Cr | 4.00 | 4.75 | ||
| Mo | 6.00 | 7.00 | ||
| V | 1.85 | 2.20 | ||
| W | 5.00 | 5.75 | ||
| Co | 11.00 | 12.25 |
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) |
|---|---|---|---|---|---|---|
| 587 (≥) | 342 (≥) | 21 | 42 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 443 |
| 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 |
|---|---|---|---|---|---|---|---|
| 293 (≥) | 631 (≥) | 32 | 23 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 134 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 466 | 987 | 928 |
We can customize the production of M44 grade, contact us for the best solution.
–sales@specificsteel.com