Alumina ceramic tube

Model:	ST-001
Brand:	SHANGTAO
Origin:	Made In China
Category:	Metallurgy , Mining & Energy / Metallurgy & Mining / Non-metallic Mineral Products
Label:	Al2o3 ceramic tube , thermocouple tube , ceramic tube
Price:	US $1 / pc
Min. Order:	1 pc

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Product Description

Alumina ceramic tube

We mainly produce alumina tubes, rods and various industrial ceramic parts, which are mainly used in thermalcouple temperature, liquid steel continous 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.

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	mm.10^-6/degree Celsius.m	8.6	8.2	8.2
9	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	Ohm/cm	1014	1014	1014
12	insulating resistance	Ohm/cm	1014	1014	1014
13	High-temperature	1000 degree Celsius MΩ	≥0.08	≥0.08	≥0.08
13	insulation resistance	1300 degree Celsius MΩ	≥0.02	≥0.02	≥0.02
14	Thermal shock resistance		1550 degree Celsius 6 times not racked	1550 degree Celsius 6 times not cracked	1300 degree Celsius 3 times not cracked
15	Maximum service temperature	degree Celsius	1900	1800