Material: alumina ceramic(75%~99.5%AL2O3 ceramic).
Single or Multi-bore ceramic tube. Size as per customers' need.
Single or Multi-bore ceramic tube. Size as per customers' need.
|
Packaging Detail:
|
Export cartons or wooden cases
|
|
Delivery Detail:
|
depends on your quantity,usually within 30days after order
|
|
Chemical competent
|
Al2O3
|
≥99.5%
|
|
SiO2
|
<0.2%
|
|
|
Fe2O3
|
<0.1%
|
|
|
Alkaline matter
|
<0.1%
|
|
|
Density
|
3.9 g/cm3
|
|
|
Hardness
|
9 M
|
|
|
Water absorption
|
<0.1%
|
|
|
Ruptures trength
|
>2000kg/cm2
|
|
|
Gas tightness
|
Kept for ten minutes at negative pressure of 1.3Kpa.
The pressure drop is less than 0.3Kpa. |
|
|
Thermal tolerance
|
Insert the pipe into the furnace at a depth of 20mm.
Heat to 1600ºC and maintain for 30 minutes. |
|
|
Alkali tolerance
|
In the Na2CO3 solution of 2N concentration, boil for
15 hours with the weight loss not greater than 20mg/dm2. |
|
|
Volume resistance
|
>9*10(5) Ω·cm/1600ºC
|
|
|
Breakdown voltage
|
20kv/cm
|
|
|
Expansion coefficient
|
8*10(-8)
|
|
|
Temperature for use
|
Long-term: 1600ºC Short-term: 1800ºC
|
|

