Mullite insulating bricks characteristics and advantages:

1.Lower content of iron, alkaline and impurities, good high temperature properties.

2.Homogeneous structure , light weight , energy saving because lower heat storage in the furnace  during cooling cycles.  

3.High strength , good thermal shock resistance under high temperature.

4.Precise sizes due to grinding and shaping after firing ,which meets the requirement of construction.

Index /brand		WAM-23	WAM-26	WAM-28	WAM-30	WAM-32
Classification temperature                  °C		1260	1430	1540	1650	1760
Bulk density                           kg/m3		580	800	890	1030	1250
Moudulus of rupture                MPa		0.9	1.5	1.6	1.7	2.0
Cold crushing strength             MPa		1.2	2.4	2.6	2.8	3.4
Permanent Liner Change             %  °CxHr		-0.1	-0.5	-0.8	-0.9	-0.9
		1230X24	1400x24	1510x24	1620x24	1730x24
Thermal expansion coefficient      (1100°C)%		0.45	0.50	0.55	0.60	0.65
Thermal conductivity (W/m.k)	400°C	0.17	0.24	0.30	0.40	0.49
	600°C	0.19	0.27	0.32	0.42	0.50
	800°C	0.22	0.30	0.35	0.44	0.51
	1000°C	0.25	0.32	0.38	0.45	0.53
	1200°C		0.35	0.39	0.47	0.55
Al2O3                                          %		45	50	64	72	76
Fe2O3                                         %		0.9	0.8	0.7	0.5	0.4
SiO2                                           %		50	43	33	26	0.4
TiO2                                           %		1.2	1.3	0.9	0.5	0.3
CaO+ MgO                                  %		0.7	0.6	0.4	0.3	0.2
K2O+ Na2O                                 %		1.3	1.1	0.8	0.2	0.1