내화도 (정도)
Common (1580°< Refractoriness< 1770°)
Bulk density 110°C,24h
2.4-2.8 g/cm3
Bulk density 1350°C,3h
2.5-2.85g/cm3
Bending Strength 110°C,24h
5-6Mpa
Bending Strength 1350°C,3h
6.5-8Mpa
Compressive strength 110°C,24h
40-50Mpa
Compressive strength 1350°C,3h
50-65Mpa
1350°C Reheating linear change
-(0.1-0.3) or -(0.1-0.5)%
water content to mixture
10-12%
Service temperature
1450-1550°C