Ir
Platinum Group Metal High Criticality

Iridium

About Iridium

Iridium is the most corrosion-resistant metal known and one of the rarest elements in the Earth's crust. It is essential for growing single crystals used in electronics, spark plugs for helicopters and aircraft, and increasingly in proton exchange membrane electrolyzers for green hydrogen production. South Africa dominates global supply as iridium is a co-product of platinum mining.

Primary Uses

Spark plugs for aviation Electrochemical catalysts Crucibles for crystal growth Hydrogen electrolysis

Top Producing Countries

1 South Africa
2 Zimbabwe
3 Russia
4 Canada

Quick Facts

Symbol
Ir
Atomic Number
77
Category
Platinum Group Metal
Criticality Level
High
Supply Risk
High
Top Producer
South Africa
USGS Critical List
Listed
EU CRM List
Listed

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