Name: High Purity Aluminum Ceramic Furnace Tube for Thermocouple
Brand: Haichen
Availability: InStock

Product Details

High Purity Aluminum Ceramic Tube for Furnace

1 High dielectric properties.

2 Extreme wear and abrasion resistance.

3 Chemical corrosion resistance under high temperature.

4 Extreme high temperature stability under reducing, inert

and high vacuum condition under high temperature up to 1800C.

5 Gas tight for many applications to provide protective atmospheres

or high vacuum at high temperature to eliminate contamination or impurity

Furnace tube

Main performance index

Serial number	performance index	Measuring unit	High purity alumina	Alumina	High alumina
1	Al₂O₃	%	99.7	99.3	85
2	SiO₂	%	less than0.1	—	—
3	Density	g/cm³	3.95	3.88	3.2
4	Wter absorption	%	0	0.01	0.2
5	Cld compressive strength	MPa	450	350	200
6	20 degree Celsius leak rates	Torr/L.sec	less than10^-11	less than10^-11	less than10^-11
7	Twisting in high temperature	mm	1700 degree Celsius 0.2 allowance	1600 degree Celsius 0.2 allowance	1400 degree Celsius 0.2 allowance
8	Bonding in high temperature		1700 degree Celsius non-caked	1600 degree Celsius non-caked	1400 degree Celsius non-caked
9	20—1000 degree Celsius coefficient of thermal expansion	mm.10^-6/degree Celsius.m	8.6	8.2	8.2
10	Thermal conductivity	W/m.k	25	25	25
11	Electric insulation strength	KV/mm	20	20	15
12	20 degree Celsius direct current insulating resistance	Ohm/cm	10¹⁴	10¹⁴	10¹⁴
13	High-temperature insulation resistance	1000 degree Celsius MΩ	≥0.08	≥0.08	≥0.08
13	High-temperature insulation resistance	1300 degree Celsius MΩ	≥0.02	≥0.02	≥0.02
14	Thermal shock resistance		1550 degree Celsius 6 times not cracked	1550 degree Celsius 6 times not cracked	1300 degree Celsius 3 times not cracked
15	Maximum service temperature	degree Celsius	1900	1800	1400