Key takeaways
- Misch metal is a mixed light rare-earth alloy, typically about half cerium and a quarter lanthanum, with neodymium and praseodymium.
- It is made by molten-salt electrolysis of rare-earth chlorides and cast into ingots.
- Its main uses are steel and cast iron treatment, ferrocerium flints, magnesium alloys and hydrogen storage alloys for NiMH batteries.
- Scrap is valued on total rare-earth content, element ratio, oxidation and form, and fines must be kept dry and sealed.
Misch metal is one of the few metals most people have used without knowing it: the spark from a cigarette lighter flint comes from it. In industry it does quieter work, cleaning up steel, strengthening magnesium and storing hydrogen in rechargeable batteries. To a scrap buyer it is an unusual material, reactive, light for a metal and described by a mixture of elements rather than a single one.
This guide answers what misch metal is, what its composition is, how it is made, what misch metal is used for, and how misch metal scrap and off-grade material are described, stored and valued. For short product details and the HS code, see the misch metal scrap page.
What Is Misch Metal?
Misch metal is a mixed alloy of the light rare-earth elements, mainly cerium and lanthanum, produced without separating them from each other. The name comes from the German Mischmetall, meaning mixed metal.
Separating rare earths into individual elements is slow and costly because they are chemically very similar. For many uses there is no need: a steelmaker who wants rare earths to react with sulfur and oxygen in a melt does not mind whether the atom doing the work is cerium or lanthanum. Misch metal gives those users rare-earth metal at a lower cost than any single separated element. A freshly cut surface is silvery; it tarnishes quickly in air. It is lighter than steel but heavier than aluminium and magnesium.
What Is the Composition of Misch Metal?
A typical misch metal contains about 50% cerium and about 25% lanthanum, with neodymium and praseodymium making up most of the remainder, plus small amounts of iron and other rare earths. The exact ratio depends on the ore and on what the producer has chosen to remove.
| Element | Typical share | Note |
|---|---|---|
| Cerium (Ce) | About half | The main constituent in most grades; cerium-rich grades are made for flints and steel treatment |
| Lanthanum (La) | About a quarter | Higher in lanthanum-rich grades, including some made for hydrogen storage alloys |
| Neodymium (Nd) and praseodymium (Pr) | Most of the balance | Often reduced or removed by producers, because these elements are sought separately for magnets |
| Iron and other metals | Small | Limited by grade and reported in the analysis |
Two points matter for anyone trading it. First, "misch metal" is not one fixed composition. Material made from bastnäsite ore tends to be richer in lanthanum than material from monazite, and since the 2000s producers have often taken out neodymium and heavier rare earths before making misch metal, leaving lanthanum-cerium or lanthanum-cerium-praseodymium mixtures. Second, the analysis should always report total rare-earth content and the individual cerium, lanthanum, neodymium and praseodymium figures, because buyers choose material by ratio as well as by total.
- CeCerium, atomic number 58, about half of most grades
- LaLanthanum, atomic number 57, about a quarter
- NdNeodymium, atomic number 60, often reduced in modern grades
- PrPraseodymium, atomic number 59, a smaller share
How Is Misch Metal Made?
Misch metal is made by electrolysing molten rare-earth chlorides, after the ore has been broken down and unwanted elements removed. The molten metal collects at the cathode and is cast into ingots or rods.
- 1Ore concentratemonazite or bastnäsite
- 2Crackingacid or alkali breaks down the mineral and releases the rare earths
- 3Purificationthorium and other unwanted elements are removed, and some producers also take out neodymium
- 4Chloridesthe mixed rare earths are converted to chlorides and dried
- 5Molten-salt electrolysisthe chlorides are electrolysed and liquid misch metal collects
- 6Castingmetal is cast into ingots or rods and cut to the user’s size
The ingots are then sold as they are, cut into smaller pieces, or alloyed further. Ferrocerium for flints, for example, is misch metal combined with iron and small hardening additions, because pure misch metal is too soft to throw a good spark.
What Is Misch Metal Used for?
Misch metal is used mainly to treat steel and cast iron, to make ferrocerium flints, to alloy magnesium, and to make hydrogen storage alloys for nickel-metal hydride batteries. Smaller amounts serve as starting material for separating individual rare earths.
Steel and Cast Iron Treatment
Rare earths combine very strongly with sulfur and oxygen. Added to liquid steel, misch metal ties up sulfur and changes the shape of sulfide inclusions from long stringers into small, rounded particles, which improves toughness across the rolling direction. In cast iron, rare earths are used alongside magnesium treatments to help control graphite shape. This is the same chemistry that makes sulfur and oxygen so troublesome in other alloys, as discussed in tramp elements in remelting.
Lighter Flints and Fire Starters
Ferrocerium made from misch metal is the "flint" in lighters, gas torches and outdoor fire steels. Scraping it with a hard edge tears off tiny particles that ignite in air, which is the spark.
Magnesium Alloys
Rare-earth additions improve the strength and creep resistance of some magnesium alloys at moderate temperatures, which matters for cast parts that run warm.
Hydrogen Storage and Batteries
Alloys of misch metal and nickel, written MmNi5 in technical papers, absorb and release hydrogen reversibly. They are used as the negative electrode material in nickel-metal hydride batteries. Lanthanum-rich grades are often preferred here.
Misch metal is also used in small amounts in some zinc-aluminium coatings for steel wire. It is not a magnet material in itself: rare-earth magnets use separated neodymium and praseodymium, not misch metal.
How Does Misch Metal Compare with Ferrocerium and Separated Rare Earths?
Misch metal sits between two other rare-earth products: ferrocerium, which is made from it, and separated rare-earth metals, which are made instead of it. A scrap lot can contain any of the three, and each is described differently.
Misch Metal
- Mainly rare earths cerium and lanthanum lead, with neodymium and praseodymium
- Relatively soft cuts and machines easily
- Uses steel and cast iron treatment, magnesium alloys, hydrogen storage alloys
- Analysis high total rare earths, little iron
Ferrocerium
- Misch metal plus iron with small hardening additions
- Harder and more brittle made to throw sparks
- Uses lighter flints, gas torch strikers, fire steels
- Analysis rare earths with a clearly higher iron figure
Separated rare-earth metals, such as lanthanum, cerium or neodymium on their own, are produced after a long solvent extraction process and are sold as individual elements. They cost more to make than misch metal and go to users who need one element, such as magnet makers. If a lot is described as "rare-earth metal" without an analysis, it could be any of these, so the first step is always to find out which. In a yard, all three should be stored and labelled apart from ordinary non-ferrous metal, and fines from any of them kept sealed.
Is Misch Metal Dangerous to Handle?
Misch metal is reactive rather than toxic in normal handling, and the main hazards are oxidation and ignition of fine material. Solid ingots are stable if kept dry, but turnings, fines and dust oxidise quickly and can ignite, and any piece throws sparks when scraped or struck with a hard tool.
- Keep it dry and in sealed containers; moisture speeds up oxidation.
- Store fines and turnings separately from solids, in closed metal drums.
- Keep it away from grinding, cutting and other spark sources in a yard.
- Label containers clearly so nobody mistakes it for an ordinary non-ferrous metal.
Commercial misch metal is made after thorium has been removed during ore processing. If you hold old or unidentified rare-earth material, an analysis should come before any sale.
Where Does Misch Metal Scrap Come from?
Misch metal scrap comes mainly from offcuts, ingot ends, production rejects and surplus stock, because most misch metal is consumed in its first use. Rare earths added to steel stay in the steel, and a lighter flint is used up.
- Ingot ends and offcuts from cutting cast ingots to the sizes users order.
- Flint and ferrocerium production rejects, which keep the rare-earth content of the alloy they were made from.
- Surplus stock at foundries and steel plants that changed their treatment practice.
- Turnings and fines from machining and crushing, often partly oxidised.
- Hydrogen storage alloy residues, which are nickel-bearing and described separately from plain misch metal.
The economics of returning off-grade alloys to use are covered in why ferro alloy scrap is worth recycling.
How Is Misch Metal Scrap Identified and Described?
Misch metal scrap is identified by its rare-earth analysis and described by total rare-earth content, the individual element figures, form, oxidation and quantity. Handheld XRF shows cerium, lanthanum, neodymium and praseodymium and separates misch metal from other metals quickly; a laboratory analysis gives the figures a buyer settles on.
- Total rare-earth contentthe sum of cerium, lanthanum, neodymium and praseodymium
- Element ratiocerium-rich, lanthanum-rich or neodymium-depleted, with figures
- Iron and other metalsreported, because ferrocerium and alloy residues carry more iron or nickel
- Oxidationshare of oxide and surface condition, especially on fines
- Formingot ends, lumps, offcuts, turnings or fines, each kept apart
- Packagingsealed, dry containers, with condition noted
Misch metal is easy to confuse with other light grey metals at a glance. The spark test is a giveaway, but XRF is the reliable check. Our comparison of XRF, OES and laboratory analysis explains what each method can confirm, and positive material identification covers how readings are recorded for a lot.
What Sets the Misch Metal Scrap Price per Kg?
The misch metal scrap price per kg follows its rare-earth content and the rare-earth market, adjusted for ratio, oxidation and form. No figure is given here because it changes with the market and every lot differs.
- Total rare-earth content. Clean metal with a high total is worth more than oxidised material with the same weight.
- Ratio of elements. Neodymium and praseodymium are sought for magnets, so their share can affect value; lanthanum-rich material suits battery alloy makers.
- Oxidation and form. Oxide is not metal, and fines carry more of it than solid ingot ends.
- Contamination. Iron, nickel or other metals from alloys and residues narrow the possible buyers.
- Quantity and documentation. A uniform lot with an analysis is easier to place than a drum of mixed pieces.
How Do You Buy or Sell Misch Metal Scrap?
To buy or sell misch metal scrap, prepare a clear description: form, approximate weight, analysis if available, condition and packaging, with photographs of the material and of the containers. Because the material is reactive, say how it is packed and stored.
Mipra Steel, based in Mumbai, buys and supplies misch metal and other ferro alloy and minor metal scrap described by grade, and handles import and export enquiries. Misch metal is classified with rare-earth metals under HS subheading 2805.30; confirm the national line with a customs broker, and check the shipping paperwork in documents for exporting alloy scrap. Related materials are listed in the ferro alloy and metal scrap overview and the guide to types of ferro alloys. Packing advice for reactive and fine materials is in the scrap preparation guide, and enquiries from buyers in Japan and other markets follow the same steps. When you are ready, send us the grade, form, quantity and photos and we'll review your enquiry.
Submit a requirement with the grade, form, quantity and delivery location.
Source a GradeFAQ
What does misch metal mean?
Misch metal comes from the German Mischmetall, meaning mixed metal. It describes an alloy of light rare-earth elements, mainly cerium and lanthanum, produced without separating them from each other, which keeps it cheaper than any single separated rare earth.
Is misch metal the same as ferrocerium?
No. Misch metal is the rare-earth alloy itself. Ferrocerium is misch metal combined with iron and small hardening additions, made into lighter flints and fire steels. Ferrocerium scrap carries more iron than plain misch metal and is described separately in an analysis.
Why does misch metal spark?
When misch metal or ferrocerium is scraped with a hard edge, tiny particles are torn off. Rare-earth metals react so readily with oxygen that these fresh particles heat up and ignite in air, producing the familiar shower of sparks used in lighters and fire starters.
Is misch metal a rare-earth magnet material?
Not directly. Rare-earth permanent magnets use separated neodymium and praseodymium, not misch metal. In fact, many producers now remove neodymium before making misch metal because it is more useful on its own. Misch metal is used for steel treatment, flints, magnesium alloys and hydrogen storage.
How should misch metal scrap be stored and shipped?
Keep it dry, in sealed and clearly labelled metal containers, with fines and turnings packed separately from solid pieces and away from spark sources. Note the packaging on the lot description, and check any transport rules for reactive metals with your forwarder before dispatch.
What is the HS code for misch metal?
Misch metal is classified with rare-earth metals under HS subheading 2805.30. National tariff lines add further digits and can differ by country, so confirm the exact line with a customs broker before shipping.
Can XRF identify misch metal?
Yes. Handheld XRF shows cerium, lanthanum, neodymium and praseodymium and separates misch metal from aluminium, magnesium and other light grey metals. For the figures a buyer settles on, particularly total rare-earth content and oxidation, a laboratory analysis of a representative sample is normally used.
