Manganese is the metal almost nobody names, yet you cannot make steel without it, and USGS says it has no satisfactory substitute. About 90% of all manganese goes into steelmaking, which makes it one of the largest metal markets on Earth at roughly 20 million tonnes a year. It is mined mostly in South Africa and Gabon, processed mostly in China, and it is now becoming a battery metal too. 2025 (USGS) · Compiled June 2026
Manganese mined 2025
20 Mt
manganese content, a heavyweight
Goes into steel
~90%
no satisfactory substitute
South Africa + Gabon
63%
of world mine output
US mine output
0
none since 1970, 100% imported
Where the World's Manganese Is Mined (2025)
Colour intensity shows each country's share of manganese mine production. Hover a country for its tonnage. This is an African story: South Africa and Gabon together mine about 63%, with Ghana, Australia and a few others behind. China, the big consumer, barely mines any.
Lower shareHigher share
2025 Manganese Mine Production by Country (kt of Mn content)
South Africa leads at about 7.6 million tonnes of manganese content, then Gabon at 5 million. Ghana, Australia, Brazil, India and China are well behind. Two African countries supply most of the world's steel ingredient.
Where the Reserves Sit (Mt, gross weight)
Australia and South Africa hold the largest reserves, with Brazil and China behind. USGS estimates South Africa alone holds about 70% of the world's manganese resources, so the long-term picture leans even more African.
The steel backbone, made tangible.
Manganese is invisible because it hides inside steel, but the numbers are huge. It is in nearly every tonne of steel made, it has no real substitute, and it is one of the largest metal markets there is. Verify-and-cite figures in the footer.
~10 kg
per tonne of steel
Roughly 10 kg of manganese goes into every tonne of steel, to remove oxygen and sulphur and add strength.
90%
of manganese is for steel
About 90% of all manganese mined goes straight into steelmaking. No other metal depends on steel so completely.
0
substitutes
USGS states plainly that manganese has no satisfactory substitute in its major application. There is no plan B.
20 Mt
mined a year
At about 20 million tonnes of manganese content a year, it is one of the most-produced metals on Earth.
One of the Biggest Metals You Never Hear About (annual world output, Mt)
People talk about copper and aluminium and forget manganese, yet it is produced on the same scale: about 20 million tonnes a year, more than zinc, nickel, lead and tin combined. It is a top-tier industrial metal hiding inside something else.
Where Manganese Goes
It is almost a one-use metal. About 90% of manganese goes into steelmaking, as ferroalloys that scrub out oxygen and sulphur and add strength and hardness. A small, fast-growing slice now goes into lithium-ion battery cathodes, and the rest into chemicals and fertiliser.
It Is a Steel Metal
Group it up and there is barely anything to group. Steel is the whole story. That is why manganese demand tracks the steel industry almost exactly, and why a steel slowdown shows up in the manganese price.
The Ingredient in Every Steel
Manganese does two jobs that nothing else does as well. In the furnace it removes oxygen and sulphur, the impurities that make steel brittle, so almost every steel on Earth contains some. And as an alloying element it adds strength, hardness and toughness: rail track, earth-moving buckets, crusher jaws and safes are made from high-manganese steel because it work-hardens under impact. USGS puts it bluntly: manganese has no satisfactory substitute in its major use. The newer chapter is batteries, where high-purity manganese is going into lithium-ion cathodes such as NMC and the cheaper LMFP, a small share today but the fastest-growing one. Steel made manganese essential. Batteries are making it strategic.
South Africa share
38%
of world mine output
Top 3 miners
73%
South Africa, Gabon, Ghana
Battery-grade processing
China
dominates high-purity manganese
Substitutes
none
no satisfactory replacement
How Concentrated Manganese Mining Is (% of 2025 output)
Mining is concentrated, but not in China. South Africa is about 38%, Gabon 25%, and the top three (adding Ghana) about 73%. The risk here is different: a few African countries and the rail lines and ports that move their ore.
The Price Tracks Steel (manganese ore, China CIF, USD per mtu)
Manganese has no price spike to show, and that is the point. It moves in a narrow band, around $5 per metric ton unit, rising and falling with steel demand. In 2025 it eased as steel consumption stayed flat.
The Supply-and-Risk Story
Manganese carries two different risks, in two different places. The ore comes mostly from South Africa and Gabon, about 63% between them, so the worry is concentrated mining and the rail and port bottlenecks that move heavy ore to the coast; a single cyclone shut an Australian mine for most of 2024. The processing is a separate story: China dominates the ferroalloy and high-purity manganese that turn ore into something usable, and almost entirely controls the battery-grade manganese sulphate headed for electric-vehicle cathodes. The United States mines none and is 100% import reliant. And there is no escape hatch, because USGS says manganese has no satisfactory substitute. So the quietest metal in the steelworks is also one of the hardest to replace.
Why It Matters
Manganese is the most important metal almost nobody talks about. You cannot make modern steel without it, it removes the impurities that make steel brittle and adds the strength that holds up buildings, rails and machines, and there is no satisfactory substitute. That alone makes it one of the largest and most essential metal markets on Earth, about 20 million tonnes a year. The supply map is unusual: the ore is mostly African, from South Africa and Gabon, while the processing, including the battery-grade manganese now wanted for electric-vehicle cathodes, leans heavily on China. The United States mines none of it. So manganese sits in a strange place: utterly essential, genuinely abundant in the ground, and yet dependent on a handful of mines, a few rail lines and one country's refineries. The manganese question is not whether we have it. It is whether the world treats a metal this critical with the attention it has never bothered to give it.