Zinc's Applications: Galvanising Protects the World's Steel
60 percent of zinc becomes a thin galvanised coating on steel, quietly protecting bridges, cars, roofs, and pipes for decades at a time.
Galvanising
Sacrificial protective coating on steel, using the electrochemistry covered on the materials science page, the dominant use by a wide margin.
Brass & bronze
Copper-zinc alloys for fittings, instruments, and decorative hardware, covered on copper's materials science page from the copper side.
Zinc-base die-cast
Zamak alloy components, covered on the mechanics page, for hardware and automotive fittings.
Oxides & chemicals
Rubber manufacturing, agriculture, and a range of specialty chemical uses.
The breakdown
Because galvanising is so dominant, zinc demand is substantially a derivative of steel production and construction activity, covered on steel’s own application-wise page, the same kind of demand-coupling documented for manganese’s steelmaking dependency, just through corrosion protection rather than alloying.
Sources: end-use shares reference this project’s own verified demand data (USGS Mineral Commodity Summaries 2025, International Zinc Association).