C799 Al2O3 95% 99% Alumina Ceramic Crucible for Glass Melting Pot

• Refractoriness (℃): 1770< Refractoriness< 2000
• Feature: Long Time Materials
• Type: Refractory Material
• Shape: Cylindrical Crucible
• Material: High Pure Alumina
• Transport Package: Wooden Box
• Model NO.: CCN-008
• Specification: 95/99% Alumina
• Trademark: CCN
• Origin: China
• HS Code: 69091100
• Production Capacity: 50000000PCS/Year

Product Description

Product Description

Alumina crucible is mainly used as a container for analyzing and firing materials or products produced and used in all industries such as coal analysis, analyzing and smelting of metal, analyzing and firing of chemical raw materials, analyzing and founding of glass, analyzing and firing of raw materials such as rare earth, and minerals, firing of high-temperature products such as ceramics, and the founding of single-crystal raw materials.

Alumina crucibles represent a cost-effective alternative to certain other materials when heat resistance and corrosion resistance are essential. Specifically, alumina offers:

• Maximum operating temperature of approximately 1,700°C
• Good strength and hardness
• Chemical stability
• Electrical insulation

High-alumina Crucibles Various Sizes, Materials Physical and Chemical Index, different technique datas of different alumina percentage
Materials Physical and Chemical Index

 

Item	Unit	AL99.7%	AL99	AL95
Al2O3 content	-	99.7%	99%	95%
Color	-	Ivory white	Ivory white	Ivory white,white
Air tightness	-	airtight	airtight	airtight
Density	g/cm3	3.94	3.8	3.7
Straightness	-	2‰	2‰	2‰
hardness	Moh's hardness	9	9	8.8
Water absorption	≤0.2	≤0.2	≤0.2	≤0.2
Flexural strength(20ºC)	Mpa	375	340	304
Compressive strength(20ºC)	Mpa	2300	2210	1910
Thermal expansion coefficient        (25ºC-800ºC)	105/ºC	7.6	7.6	7.6
Insulation strength(thickness:5mm)	AC-kv/mm	10	10	10
Dielectric loss 25ºC@1MHz	-	<0.0001	<0.0006	<0.0004
Volume resistivity (20ºC) (300ºC)	Ω·cm3	>1014 >1010	>1014 >1010	>1014 >1012
Long-term use temperature	ºC	1700	1600	1200
Thermal conductivity(25ºC)	W/m^oK	35	34	20

Alumina Ceramic Crucibles Capacity: 5-1500ml, maximum capacity can be customized.

Detailed Photos