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Contact Person : Ms. lee nicole
Company Name : DKJL CO., LTD.
Tel : 86-10-62197466-324
Fax : 86-10-62137685
Address : Beijing,Beijing,NO.606,HENGRUN CENTER, NO.32 BEISANHUAN WEST ROAD
Country/Region : China
Zip : 100086

refracoty alumina pipe

$refracoty alumina pipe$

Product Detailed

Related Categories:Ceramics
Related Product Searches:refracoty alumina pipe,High Quality alumina tube,alumina tube

ceramic pipe has the charactiristic as following: Purity:99.7% Denstiy:3.90g/cm3 temp.:1800 degree

Item		Unit	High corundum	Corundum	High Purity Alumina
Chemical Composition	Al2O3	%	99.7	99.3	85
Chemical Composition	SiO2	%	0.1
Density		g/cm3	3.95	3.88	3.2
Water absorption		%	0	0.01	0.2
Compressive Strength		Mpa	450	350	200
20Gas tightness		Torr/L.sec	10-11	10-11	10-11
High-temp.bending		mm	1700 0.2	1600 0.2	1400 0.2
High-temp. bonding			1700 not	1600 not	1400 not
20-1000 Expansion coefficient		mm.10-6/.m	8.6	8.2	8.2
Thermal conductivity		W/m.k	25	25	25
Breakdown voltage		KV/mm	20	20	15
High-temp. resistance		1000 MΩ	≥0.08	≥0.08	≥0.08
High-temp. resistance		1300 MΩ	≥0.02	≥0.02	≥0.02
20 DC resistance		Ohm/cm	1014	1014	1014
Chill and abrupt heat			1550not cracking six times	1550not cracking six times	1300 not cracking thrice
Max. Service Temp.			1900	1800	1400

Material: Corundum

Use: For thermocouple, interval and insulation between couple wires. For specifications, there are single hole, double holes, four holes and multi-holes. For form, there are round and oval pipes.

Features: Great mechanical strength, good resistance to thermal impact, good insulation and high-frequency characteristics under high temperature. Breakdowm voltage and volume resistance and self-reactance are great and thermal expansion coefficient is small.

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