Ceramic Crucible

1.high purity 2.Resistant to sudden cold and hot, un-explosive 3.High density of slip casting,high purity alumina crucible

Ceramic Properties Standard
Properties*		Units	99% Al203
Density		gm/cc	3.80
Crystal Size	Average	MICRONS	6
Water Absorption		%	0
Gas Permeability			0
Color			IVORY
Flexural Strength (MOR)	20° C	MPa (psi x 103)	379 (55)
Elastic Modulus	20° C	GPa (psi x 106)	370 (54)
Poisson's Ratio	20° C		0.22
Compressive Strength	20° C	MPa (psi x 103)	2600 (377)
Hardness		GPa (kg/mm2)	14.1 (1440)
		R45N	83
Tensile Strength	25° C	MPa (psi x 103)	262 (38)
Fracture Toughness	K(I c)	Mpa m1/2	4 - 5
Thermal Conductivity	20° C	W/m °K	30.0
Coefficient of Thermal Expansion	25-1000° C	1X 10-6/°C	8.2
Specific Heat	100° C	J/kg*K	880
Thermal Shock Resistance	Tc	°C	200
Maximum Use Temperature		°C	1750
Dielectric Strength		ac-kV/mm (ac V/mil)	8.7 (220)
Dielectric Constant	1 MHz	25° C	9.7
Volume Resistivity	25° C	ohm-cm	> 1014
	500° C	ohm-cm	2 x 1010
	1000° C	ohm-cm	2 x 106
Impingement			0.47

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Ceramic Crucible