Refractory Materials are usually non-metallic materials having those chemical and physical properties that make them applicable for structures, or as components of systems, that are exposed to environments above 1,000 °F (811 K; 538 °C)。

Fused Mullite




Al2O3 : 70% min
SiO2 : 22-29%
Fe2O3 : 0.1% max
R2O : 0.5% max
RO : 0.3% max
B.D. : 3g/cm3 min