Specifications

Ceramic high alumina tube
1.High alumina
2.Used in furnace
3.Best price

ceramic high alumina 99 tube

 

We mainly produce alumina tubes, rods and various industrial ceramic parts, which are mainly used in thermalcouple temperature, liquid steel continous temperature, various industrial furnace(containing vacuum furnace, carburizing furnace, wire furnace, atmosphere furnace etc), especially widely used in petrochemical, spinning, electric, instrumentation, mechanical workout, military project etc industry.

 

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