High Pure Alumina Ceramic Thermocouple-Protection Tubes

• Refractoriness (℃): 1770< Refractoriness< 2000
• Feature: Long Time Materials
• Type: Refractory Material
• Shape: Pipe
• Material: Alumina
• Color: Pink and White
• Model NO.: CCN-001
• Transport Package: Wooden Box
• Specification: 95/99% Alumina
• Trademark: CorCreation
• Origin: China
• HS Code: 69091100
• Production Capacity: 150, 000PCS/Month

Product Description

 

Product Description

 

Alumina ceramic thermocouple-protection tubes are considered to have better mechanical strength and better chemical resistance. Alumina ceramic thermocouple-protection tubes also have excellent abrasion resistance. Alumina ceramic thermocouple-protection tubes are considered to be gas tight so they make excellent primary protection tubes. Alumina ceramic thermocouple-protection tubes can be for primary and secondary protection tubes on Noble Metal (Platinum based) thermocouples.

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

Regular dimension:
 

1. Outer diameter:3mm-25mm;
2. Maximum length 2500mm;
3. Thickness: by dimension scale of product 0.5mm to 4mm.

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

Detailed Photos

 

Packaging & Shipping