Ferro Tungsten
| Name | Information |
|---|---|
| Tungsten Content | 70%–80% |
| Appearance | Silver grey metal |
| Size | 10 – 130 mm |
| Packing | 100 kg, 250 kg each steel drum or 1 MT big bag |
| Impurity | Mn, Si, C, S, Cu, P |
Description:
Ferro Tungsten is prepared from wolframite by carbon reduction in an electric furnace. It is mainly used as alloying element additive for tungsten containing alloy steel (such as high-speed steel). There are three kinds of ferrotungsten produced in China, including w701, W702 and w65, with a tungsten content of about 65~70%. Due to the high melting point, it cannot flow out of the liquid, so it is produced by caking method or iron extraction method.
Application:
As the addition agent of tungsten in steel making and casting, it can improve the hardness, wear resistance and impact strength of steel. For high speed tool steel, alloy tool steel, heat-resistant steel, spring steel, steel production.
Chemical Composition (%):
| Grade | FEW BOW-A | FEW BOW-B | FEW BOW-C |
|---|---|---|---|
| W | 75%–80% | 75%–80% | 75%–80% |
| C | 0.1% max | 0.3% max | 0.6% max |
| P | 0.03% max | 0.04% max | 0.05% max |
| S | 0.06% max | 0.07% max | 0.08% max |
| Si | 0.5% max | 0.7% max | 0.7% max |
| Mn | 0.25% max | 0.35% max | 0.5% max |
| Cu | 0.1% max | 0.12% max | 0.15% max |
| As | 0.06% max | 0.08% max | 0.10% max |
| Bi | 0.05% max | 0.05% max | 0.05% max |
| Pb | 0.05% max | 0.05% max | 0.05% max |
| Sb | 0.05% max | 0.05% max | 0.05% max |
| Sn | 0.06% max | 0.08% max | 0.08% max |
| Size | 10–100 mm, 5–50 mm, 3–30 mm | ||