Iridium
Iridium is the second densest of all elements. With a melting temperature of 2446°C (4435°F), it is exceeded only by the refractory group metals. It exhibits excellent high temperature properties and mechanical strength, being used in certain applications, unprotected, in air at temperatures exceeding 2000°C (3632°F). At these temperatures it also shows outstanding resistance to a variety of salts and oxides. It is unaffected by common mineral acids and aqua regia.
This makes iridium an obvious choice for a whole range of high temperature applications.
However, its high degree of stiffness and resistance to deformation render its fabrication into complex components difficult.
Johnson Matthey has spent many years developing an understanding of the methods of working iridium into component form.
The installation of specialty melting equipment, hot rolling and drawing plant, and thermal deposition systems in our facilities at Royston near Cambridge in the UK, and at West Chester near Philadelphia in the USA, has resulted in a unique fabrication ability in iridium.
Further information regarding these products can be found on the individual product pages, or please contact Johnson Matthey directly.
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