Al2O3

38-42

SiO2

52-57

Fe2O3

CA   /APPROX 大約

1.5

體積密度BD

2.10-2.25g/cm3

顯氣孔率apparent porosity

14-17%

抗壓強度cold crushing strength

50 N/mm2

熱膨脹性能thermal expansion

At 400℃  0.2 lin._%

At 800℃  0.5

At 1200℃0.7

耐熱震性Thermal shock resistance

(950℃/air)      >30

導熱系數Thermal conductivity

At 300℃     1.0w/mk

At700℃     1.1

At 1000℃   1.2