Product Details

Specifications

High purity Alumina crucible
1.high purity Al2O3 >99%
2.industrial alumina crucible
3.high working temperature 1800C

High temperature alumina ceramic crucible

1.Product description

Alumina crucible is the use of high purity powder, adding trace elements, from the phase structure and fiber structure modification and production of a smelting vessel.Products and the whole stability of zirconia porous alumina crucible crucible, the former is mainly used for laboratory smelting and burn into other high melting point, which is mainly used for high temperature melted with Pt, Rh, Au and other precious metals.

2.Features of the alumina crucible

1. High chemical etching resistance.

2. High temperature up to 1800°C

3. Resistant to sudden cold and hot, un-explosive.

4. High density of slip casting.

5. Various kinds of shape.

3. Alumina Ceramics Technical Parameter

Alumina Content		80-85%	90-96%	> 99.5%	99%
General Application		Lower Cost Electrical & Mechanical	High Strength, Wear Resistant, Electronic, Insulating, Mechanical, Structural & Metalizing	Extremely High Purity, Temperature & Strength; Excellent Corrosion & Wear Resistance	Porous, Easily Degassed & Machinable
Porosity	%	0-.05	0-.05	0-.05	Variable
Density	gm/cm³	3.45-3.50	3.55-3.75	3.75-3.95	2.4
Flexural Strength	kpsi	35.0-40.0	40.0-50.0	50.0-55.0	-
Comprehensive Strength	kpsi	260.0	> 300.0	> 300.0	-
Tensile Strength	kpsi	15.0-20.0	20.0-28.0	20.0-28.0	-
Linear Coefficient of Thermal Expansion	(cm/cm/°C) 25-300°C 25-700°C	5.9X10^-6 6.5X10^-6	6.3X10^-6 7.0X10^-6	6.5X10^-6 7.5X10^-6	6.5X10^-6 7.5X10^-6
Dielecctric Constant at 25°C	1 MH 10 MH	8.5-8.9 8.4-8.8	9.2-9.8 9.0-9.6	9.5-9.9 9.3-9.7	-
Dielectric Strength	Volt/mil	200	225	225	-
Te Value	°F °C	1472 800	> 1832 > 1000	> 1832 > 1000	> 1832 > 1000
Thermal Conductivity at 25°C	cal/sec/cm²/cm/°C	.03-.04	.04-.06	.07-.08	-
Thermal Shock		Good	Good	Good	Good
Safe Use Temperature	°F °C	2550 1400	3000-3100 1650-1700	3275 1800	3275 1800