W series high speed steel
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.70 | 0.80 | ||
| Si | - | 0.40 | ||
| Mn | - | 0.40 | ||
| Co | - | 1.00 | ||
| Cr | 3.75 | 4.50 | ||
| Mo | - | 0.70 | ||
| Ni | - | 0.40 | ||
| V | 1.00 | 1.25 | ||
| W | 17.5 | 18.5 | ||
| Cu | - | 0.20 | ||
| Sn | - | 0.05 |
W series high speed 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) |
|---|---|---|---|---|---|---|
| 444 (≥) | 654 (≥) | 13 | 23 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 444 |
| 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 |
|---|---|---|---|---|---|---|---|
| 769 (≥) | 814 (≥) | 21 | 43 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 432 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 781 | 999 | 677 |
We can customize the production of BT1 grade, contact us for the best solution.
–sales@specificsteel.com