Lightwight insulation fireclay brick with good thermal shock stability, good heat insulation performance, mainly used in thermal boiler, glass kiln, cement kiln, chemical fertilizer gas furnace, blast furnace, hot blast furnace, coke furnace, electric furnace, casting and casting steel brick.

Item 项目		Lightwight insulation fireclay brick 轻质粘土保温砖
		NG-1.5	NG-1.3a	NG-1.3b	NG-1.0	NG-0.9	NG-0.8	NG-0.7
Bulk Density 体积密度(g/cm3)	≤	1.5	1.3	1.3	1.0	0.9	0.8	0.7
Cold Crushing Strength 常温耐压强度(Mpa)	≥	10	8	8	6	4	4	2
Temp.at Reheating Linear Change Rate≤2% 重烧线变化不大于2%的试验温度(℃)		1400	1400	1350	1350	1300	1250	1250
Thermal conductivity 导热系数W(m.k)	350±25℃	0.70	0.60	0.60	0.50	0.40	0.35	0.35