Andalusite brick has the characteristics of rapid cooling and heat resistance, high mechanical strength, strong thermal shock resistance, strong slag resistance, high load conversion point, and has extremely high chemical stability and strong chemical corrosion resistance.

Item 项目		Andalusite brick 红柱石砖
		RH-155	RH-150	RH-145	RH-140	RH-135	RH-130
Al2O3(%)	≥	69	65	61	57	53	49
Fe2O3 (%)	≤	1	1	1.2	1.2	1.5	1.5
TiO2 (%)	≤	0.5	0.5	0.5	0.6	0.6	0.6
Apparent Porosity 显气孔率(%)	≤	20(22)	20(22)	20(22)	20(22)	20(22)	20(22)
Bulk Density 体积密度（g/cm3)	≥	2.55~2.70 (2.50~2.65)	2.50~2.65 (2.45~2.60)	2.45~2.60 (2.40~2.55)	2.40~2.55 (2.35~2.50)	2.35~2.50 (2.30~2.45)	2.30~2.45 (2.25~2.40)
Cold Crushing Strength 常温耐压强度(Mpa)	≥	55(50)	55(50)	50(45)	50(45)	40(35)	40(35)
Refractoriness under Load 荷重软化开始温度(℃) (0.2Mpa)	≥	1700	1700	1650	1600	1520	1450