08/28/2026
Iridium is one of the most difficult metals to assay, with its extreme melting point, density, chemical resistance, and brittleness creating challenges throughout the testing process. Conventional furnaces cannot fully liquefy iridium, while standard fire assay and acid digestion methods also face significant limitations. As iridium supply remains constrained and secondary recovery becomes increasingly important, accurate analysis is essential for fair valuation of iridium-bearing scrap.
Iridium is one of the rarest, densest, and most chemically resistant metals on Earth. A member of the platinum-group metals, it is valued for its ability to survive conditions that destroy conventional engineering materials.