Iridium is a brittle, high-melting semi-precious metal. ACI Alloys can arc-cast pure iridium sputtering targets and evaporation pieces at 100% density, with lower oxygen content than the hot-pressed variety. We can also make many iridium alloys, notably Mn/Ir. See iridium in our “materials made” page for an idea of our capabilities–also try searching alphabetically on each of the element symbols in the material you are looking for.
The MSDS for iridium can be found here.