High-Speed Tool Steel
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 1.15 | 1.25 | ||
| Si | 0.15 | 0.65 | ||
| Mn | 0.20 | 0.40 | ||
| P | - | 0.030 | ||
| S | - | 0.030 | ||
| Cr | 3.50 | 4.25 | ||
| Mo | 7.50 | 8.50 | ||
| V | 1.50 | 1.75 | ||
| W | 2.25 | 3.00 | ||
| Co | 7.75 | 8.75 |
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) |
|---|---|---|---|---|---|---|
| 321 (≥) | 252 (≥) | 33 | 21 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 334 |
| 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 |
|---|---|---|---|---|---|---|---|
| 455 (≥) | 238 (≥) | 22 | 24 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 334 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 844 | 352 | 958 |
We can customize the production of M43 grade, contact us for the best solution.
–sales@specificsteel.com