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Mischmetall is an alloy that comprises rare earth metals, including Cer, Lanthan, Neodym, and Praseodym. It also contains impurities, such as iron and magnesium.
Mischmetal is an alloy. It contains varying proportions of rare earth metals (Cer, Lanthan, Neodymium, Praseodymium) and minor impurities such as Fe and Mg.
In some cases, Fe is added intentionally up to 3–6% to improve characteristics required for specific applications, for example in firestones.
The alloy is used for producing raw iron with spheroidal graphite during casting. It is also used in the manufacture of stainless and tool steels, vacuum‐ and heat‐resistant alloys, and various battery alloys. In the production of spheroidal cast iron, Mischmetal is added as an alloying agent. Ferro‐silicon‐magnesium (FeSiMg or MgFeSi) is applied with magnesium‐ferro‐silicon (MgFeSi) as a nodulariser in spheroidal cast iron production.
Mischmetal may also be added to a zinc–aluminium alloy known as Zinc‐5% Aluminium‐Mischmetal (Zn‐5Al‐MM). This alloy contains 95% Zn, 5% Al, and trace amounts of Mischmetal (Cer, Lanthan). It is used for steel coatings to extend product service life.
- Primary forms: trapezoidal units of 30 g, 50 g, 100 g, 250 g, 500 g and larger
- Secondary forms: wire, rods, bars, powder
Total rare earth metal content (TREM) is a minimum of 98/99%, with Ce accounting for 47–70% and La, Nd, Pr constituting the remainder.
The maximum levels for impurities are Fe 1.0/0.3% and Mg 0.8/0.1%.
Mischmetal is used primarily in the production of noble alloys and steels.
- Steel and foundry industries
- Energy storage
Other Applications
- Galvanisation
- Magnets
- Magnesium alloys
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