High-Speed Tool Steel
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 1.42 | 1.52 | ||
| Si | 0.15 | 0.40 | ||
| Mn | 0.15 | 0.40 | ||
| P | - | 0.030 | ||
| S | - | 0.070 | ||
| Cr | 3.50 | 4.00 | ||
| Mo | 4.75 | 5.50 | ||
| V | 2.75 | 3.25 | ||
| W | 9.50 | 10.50 | ||
| Co | 8.00 | 10.00 |
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) |
|---|---|---|---|---|---|---|
| 674 (≥) | 141 (≥) | 23 | 41 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 |
| 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 |
|---|---|---|---|---|---|---|---|
| 973 (≥) | 278 (≥) | 13 | 33 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 232 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 633 | 461 | 866 |
We can customize the production of M48 grade, contact us for the best solution.
–sales@specificsteel.com