Specifications

Mullite base and cap
1.material:alumina ceramic
2.Used as heater support
3.High temperature resist

Mullite base and cap

 

Bochuan company specilize in producing all kinds of refractory ceramic parts.

 

We can produce according to your drawing or detailed requirements.

 

AL2O3 conent %	75	80	85	92	95	99	99.7
Bulk density(g/cm3)	3.1	3.3	3.4	3.6	3.7	3.81	3.85
Flexural Strength(MPa)	280	215.7	230	312	304	340	370
Coefficient of linear expansion(×10-6/C)(25-800C)	7.6	7.6	7.6	7.5	7.3	7.6	7.6
Thermal conductivity[w/(m.R)]	17	17	17	18	20	34	35
Insulated strength(KV/mm)	10	10	10	10	10	10	10
Bulk density resistance(Ω.cm)20C	>1014	>1014	>1014	>1014	>1014	>1014	>1014
300C	>1013	>1013	>1013	>1013	>1012	>1010	>1010
Long term operating temperature (C)	1000	1250	1290	1390	1480	1600	1700
Hardness	7.5	7.5	7.5	8.5	8.8	9	9
Refractoriness	1700	1800	1850	1920	2000	2030	2040