Direct contact with molten glass. As platinum but with higher stress rupture strength and creep behaviour. Grain stabilisation reduces degradation at temperature and allows for a thinner wall. Avoids rhodium inclusion which can discolour glass.
Basic Composition: Pt
Temperature Limits: 1700 ° C
Density: 21.45 g/cm³
Melting Range: 1769 ° C
Coefficient of Expansion: 9.1 x10-6 / ° C
Thermal Conductivity: 74 W/m ° C at 20 ° C