Ferrotungsten
| Identifiers | |
|---|---|
| ECHA InfoCard | 100.108.319 |
| EC Number |
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| Properties | |
| Appearance | white solid |
| Melting point | 1,650 °C (3,000 °F; 1,920 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Ferrotungsten (FeW) is a ferroalloy, consisting of iron and tungsten.[2] The metal usually consists of 75%-82% or 70%-75% tungsten.
Applications
[edit]Because of its high melting point, ferrotungsten is a robust alloy with applications in aerospace[3] and making of tungsten-containing steel. Tungsten's unique electrical capabilities has made ferrotungsten useful electron microscopes and in IC chips.
Production
[edit]Discovered in 1874, world ferrotungsten production today is dominated by China, which in 2008 exported 4,835 t (gross weight) of the alloy. Ferrotungsten is relatively expensive, with the prices around $31–44 per kilogram of contained tungsten.[4] During World War 2, over 21,000,000 lb of Ferro-tungsten and other ferroalloys were shipped to Russia on lend-lease.[3] The cost was more than $12,000,000.
Ferrotungsten comes from rich ore raw materials primarily of wolframite or scheelite.
References
[edit]- ^ MSDS 12ga Star Flash Aerial Diversion
- ^ Ferro Tungsten American Elements; accessed 1 march 2019
- ^ a b Russia's Growing Air Power Popular Science Jul 1947, page 91: accessed 1 March 2019
- ^ Lisa A. Corathers et al. Ferroalloys, USGS 2008 Minerals Yearbook