HT 1650C high purity 99.7% alumina ceramic tube Al2O3 tube

Product Overview

Description

              Alumina is the most cost effective and widely used material in the family of engineering ceramics.

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  The raw materials from which this high performance technical grade ceramic is made are readily available and reasonably priced, resulting in good value for the cost in fabricated alumina shapes.

  
  


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  With an excellent combination of properties and an attractive price, it is no surprise that fine grain technical grade alumina has a very wide range of applications.

  
  

   

  
  


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  We mainly produce 90 -99.7% alumina tube, rods and various industrial ceramic parts, which are mainly used in thermocouple temperature, liquid steel continuous temperature, various industrial furnace(containing vacuum furnace, carburizing furnace, wire furnace, atmosphere furnace etc), especially widely used in petrochemical, spinning, electric, instrumentation, mechanical workout, military project etc industry

  
  


• Ceramic Tube Applications
  • Furnace work tubes
  • Kiln furniture, components & accessories
  • Thermocouple protection tubes
  • Heater Support Elements
  • High Temperature Electrical Insulators
  • Extreme temperature measurement components
  • Ceramic Laser components
  • High voltage electrical insulators

Main properties

NO.	Property	Unit	Alumina
1	Al2O3	%	>99.3
2	SiO2	%	—
3	Density	g/cm3	3.88
4	Water absorption	%	0.01
5	Cold compressive strength	MPa	350
6	20℃ leakage rates	Torr/L.sec	<10-11
7	Twisting in high temperature	mm	0.2 allowed in 1600℃
8	Bonding in high temperature		not bonded in 1600℃
9	20—1000℃ coefficient ofthermalexpansion	mm.10-6/℃.m	8.2
10	Thermal conductivity	W/m.k	25
11	Electric insulation strength	KV/mm	20
12	20℃direct current insulation resistance	Ohm/cm	1014
13	High-temperature insulation resistance	1000℃ MΩ	≥0.08
		1300℃ MΩ	≥0.02
14	Thermal shock resistance		4 times not cracked in 1550℃
15	Maximum working temperature	℃	1800