Direct contact with molten glass. As platinum 10% rhodium but with higher stress rupture strength and creep behaviour. Grain stabilisation reduces degradation at temperature and allows for a thinner wall.
Basic Composition: Pt 90%, Rh 10%
Temperature Limits: 1700 ° C
Density: 19.80 g/cm³
Melting Range: 1840 to 1870
Coefficient of Expansion: 8.6 x10-6 / ° C
Thermal Conductivity: 31 W/m ° C at 20 ° C