High Temperature Mullite Insulating Brick,Thermal Insulating Brick,Mullite Brick:
The products are according to the international standard to be manufactured.The mullite brick has low Fe2O3 content,good thermal shock resistance and low thermal conductivity.

Items		JM23	JM23	JM26	JM26
Classification temperature,°C		1260	1350	1410	1410
Bulk density,g/cm3 ≤		0.55~0.6	0.8±0.05	0.8±0.05	1.0±0.05
Cold compressive strength,Mpa		1.2	2.5	2.5	3.0
Hot load strength(%) deformation	0.034Mpa	1100°c ≤0.1
Hot load strength(%) deformation	0.07Mpa	1100°c ≤0.9	1200°c ≤0.2	1260°c ≤0.2	1260°c ≤0.2
Heating linear change,% after 24h		≤0.5	≤0.5	≤0.4	≤0.5
Al2O3,% ≥		40~45	54~56	55~57	55~57
SiO2,%		47~45	39~38	38~36	38~36
Fe2O3,% ≤		0.7~1.0	0.7~1.0	0.7~1.0	0.7~1.0
Thermal conductivity W/m.k @600°c		0.16
Thermal conductivity W/m.k @800°c		0.18	0.31	0.31	0.35
Thermal conductivity W/m.k @1000°c		0.20	0.33	0.33	0.37
Thermal conductivity W/m.k @1200°c			0.35	0.35	0.41
Reversible thermal expansion,% @1100°c		0.5	≤0.7	≤0.7	≤0.8