1. Introduce
– An alloy of iron and tungsten (about 70~85%), used as an additive in steelmaking
→ Increases the melting point of the alloy to make it suitable for aerospace and welding applications
→ When ferrotungsten is added to the alloy, the electrical properties of tungsten allow it to be utilized as a conductor
2. Property
– Hardness, strength, wear resistance, heat resistance, corrosion resistance, creep resistance, and tensile strength
[Fe-W Chemical Composition (%)]
| Fe | C | Si | Mn | W | P | S |
|---|---|---|---|---|---|---|
| Bal. | 0.1~0.8 | 0.5~1.0 | 0.25~0.60 | 70.0~85.0 | 0.03~0.06 | 0.06~0.10 |
[Fe-W Physical Properties]
| Density (g/㎤) | Melting Range (℃) |
|---|---|
| 15.3 | 1650~2100 |
3. Application
– Drills, Electron microscopes, IC chips, Welding electrodes, Metal films, Wiring, Circuits, Gas turbine blades, Jet engine turbine blades, Rocket nozzles
(1) IC chip / (2) welding electrode / (3) wiring / (4) jet engine turbine blade
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