Wear-Resistant Ceramic Tube 99 Alumina Ceramic Corundum Tube

• Refractoriness (℃): 1770< Refractoriness< 2000
• Feature: Long Time Materials
• Type: Refractory Material
• Shape: Pipe
• Material: High Pure Alumina
• Transport Package: Wooden Box
• Model NO.: CCN-001
• Specification: 95/99% Alumina
• Trademark: CCN
• Origin: China
• HS Code: 69091100
• Production Capacity: 50000000PCS/Year

Product Description

Product Description

Alumina thermocouple protection tubes are mainly used to protect the thermometric element, to isolate the thermometric element from the outside, and to reduce or prevent the element from being eroded, oxidized or damaged by external substances during use.

Materials

Al₂O₃: 99.7% Al₂O₃, 99%Al₂O₃, 95%Al₂O₃, 85%AL2O3, the higher the alumina content, the higher the use temperature;

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/cm^3	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·cm^3	>1014 >1010	>1014 >1010	>1014 >1012
Long-term use temperature	ºC	1700	1600	1200
Thermal conductivity(25ºC)	W/moK	35	34	20

 

Regular dimension

Outer diameter: 3mm-25mm;

Maximum length 2500mm;

Thickness: by dimension scale of product 0.5mm to 4mm.

Customized size is available
 

Feature

1.Thermal stability: Alumina can be used in oxidizing and reducing atmospheres up to 1600ºC and vacuum furnaces up to 1750ºC.

2.Fully dense: Alumina provides an impermeable tube that prevents contamination and can be used to form air-tight components.

3.High chemical resistance: Alumina is chemically inert and will not be corroded by water or steam. It resists corrosive substances, such as strong acids or bases, even at high temperatures.

4.Electrical insulation: Alumina is also widely used as an electrical insulation material. It can be used for insulators that operate at high temperatures.

Detailed Photos