Material Insights · Understanding the Material World

Molybdenum and Steel

Steel is molybdenum's main market: about four-fifths of newly mined molybdenum (2022 data) goes into stainless, alloy and tool steels and cast iron, where it adds strength and corrosion resistance and has few good substitutes.

Molybdenum (commodity) and Steel (commodity): 4 relationships.

How they are linked

1. Alloying element

Physical flow · Strong · Molybdenum to steel

Small additions of molybdenum make steel harder, stronger at high temperature and, in stainless grades, much more resistant to pitting and crevice corrosion in chloride solutions such as seawater.

  • about 25% of new molybdenum into molybdenum-grade stainless steel, 2022
  • 54% into constructional steel, tool and high-speed steel and cast iron, 2022

Together these steel and iron uses took about 79% of new molybdenum in 2022, with the rest in nickel alloys, chemicals and other upgraded products. Demand therefore follows output of alloy and molybdenum-bearing stainless steel, not the much larger tonnage of plain carbon steel, which needs no molybdenum.

Sources: International Molybdenum Association (IMOA); International Molybdenum Association (IMOA)

2. Few substitutes

Substitution · Weak · Other alloying metals can partly replace molybdenum

USGS finds little substitution for molybdenum in steels and cast irons; boron, chromium, niobium and vanadium can stand in for some alloy steels and tungsten in tool steels, usually with trade-offs.

Because steelmakers cannot easily design molybdenum out, demand is price-inelastic in the short run and price spikes pass through to alloy and stainless steel costs. Substitution is most practical in constructional alloy steels and least in high-molybdenum stainless grades chosen for chloride resistance.

Sources: USGS

3. Recycled in steel scrap

Physical flow · Medium · Molybdenum returns through alloy steel scrap

Molybdenum is not refined back out of alloys; it is reused when alloy and stainless steel scrap is remelted, so the metal stays in the steel loop.

  • up to 30% of apparent molybdenum supply from recycled scrap

Recycled alloy content is significant, so a higher scrap share in stainless and alloy steelmaking reduces demand for newly mined molybdenum. The loop depends on sorting alloy scrap well; mixed scrap dilutes the molybdenum it carries.

Sources: USGS

4. Concentrated mine supply

Shared risk · Medium · Mine supply risk flows to alloy steelmakers

Five countries mined 90% of molybdenum in 2025, with China the largest, and a growing share comes from copper mines that recover molybdenite as a by-product, so alloy steelmakers depend on a narrow and partly involuntary supply.

  • 97,000 t China's mine output, 2025, of about 260,000 t
  • about 90% of world output from China, Chile, the US, Peru and Mexico, 2025

Copper producers are adding molybdenite recovery to offset ageing mines and lower grades, which ties molybdenum supply to copper investment. China imposed export controls on molybdenum powders in February 2025, showing that trade policy can tighten supply of some products.

Sources: USGS

For investors

Key learnings

  1. About 79% of newly mined molybdenum went into steels and cast iron in 2022, so alloy and stainless steel output is the demand signal to follow.
  2. Few substitutes exist in steel, so molybdenum price spikes pass through to alloy steel costs rather than cutting demand quickly.
  3. Supply is concentrated, with five countries at 90% of output in 2025, and partly a copper by-product, so it does not respond fully to molybdenum prices.

What to track

  • Molybdic oxide and ferromolybdenum prices: Rises raise alloy and stainless steel costs (Weekly · Fastmarkets, Argus; yearly · USGS)
  • Stainless and alloy steel output: Higher melt rates lift molybdenum demand (Quarterly · worldstainless, worldsteel)
  • Copper mine output with molybdenum recovery: New by-product capacity adds supply (Monthly · Cochilco, company reports)

For policymakers

Key learnings

  1. Industries that need steel able to resist chloride corrosion carry molybdenum supply risk through the stainless grades they buy.
  2. Good sorting and recycling of alloy steel scrap keeps molybdenum in use and reduces import needs.
  3. China's 2025 export controls on molybdenum powders show the metal can be used as a trade lever, which matters for importers such as India.

What to track

  • Imports of molybdenum ores, oxide and ferromolybdenum by source: Shows dependence on China and the Americas (Monthly · Commerce ministry TradeStat)
  • Export control lists covering molybdenum products: New controls signal supply risk for alloy steel (As announced · MOFCOM, trade ministries)

India

India is not among the molybdenum producers USGS lists, so its alloy and stainless steelmakers rely on imported molybdenum units and on recycled alloy scrap.

Sources

  1. Molybdenum and its applications, International Molybdenum Association (IMOA) (2024)
  2. Molybdenum grade stainless steels, International Molybdenum Association (IMOA) (2024)
  3. Mineral Commodity Summaries 2026: Molybdenum, USGS (2026)