Nanyang Xinyu Electric Components Co., Ltd.

China Manufacturer with main products: Furnace; Muffle Furnace; Chamber Furnace; Tube Furnace; Lab Furnace; Silicon Carbide (Sic) Heating Elements; Mosi2 Heating Elements Etc

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Ceramic Insulator Tube

FOB Price: 1.00 - 10.00 USD/Piece
Supply Ability: 100,000 Piece/Pieces per Month
Shipping: By sea or air, 15days delivery
Payment Terms: L/C, T/T, D/A, D/P, Western Union
In Stock
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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Henan in China
Packaging Details: foam filled ,wood bos outside


Ceramic Insulator Features:
90%, 95%, 99% Al2O3 Alumina Ceramic Insulator Tube.
Material: 90%-99.8% alumina optional
Mainly Usage:
1. Heat treatment furnace and toughened furnace
2. Inner liner tube and heating tube in electric furnace
1. Great mechanical strength
2. High softening temperature
3. Good resistance to thermal impact
4. Small thermal expansion coefficient
5. Resistance to acid and alkali corrosion
Electric appliance industry
Automotive industry
Mechanical industry
Engineer industry
Chemical competent
≥ 99.5%
< 0.2%
< 0.1%
Alkaline matter
< 0.1%
3.9 g/cm3
9 M
Water absorption
< 0.1%
Ruptures trength
> 2000kg/cm2
Gas tightness
Kept for ten minutes at negative pressure of 1.3Kpa.
The pressure drop is less than 0.3Kpa.
Thermal tolerance
Insert the pipe into the furnace at a depth of 20mm.
Heat to 1600º C and maintain for 30 minutes.
Alkali tolerance
In the Na2CO3 solution of 2N concentration, boil for
15 hours with the weight loss not greater than 20mg/dm2.
Volume resistance
> 9*10(5) Ω · cm/1600º C
Breakdown voltage
Expansion coefficient
Temperature for use
Long-term: 1600º C Short-term: 1800º C
Chill and abrupt heat
1500º C~room temperature not cracking thrice.
65 Al2o3
75 Al2o3
80 Al2o3
85 Al2o3
90 Al2o3
95 Al2o3
99 Al2o3
≤ 4
≤ 2
≤ 1.5
≤ 1.0
≤ 0.5
≤ 0.5
≤ 0.3
Desnsity: g / cm3
Vickers Hardness
≤ 7.8
≥ 8
≥ 8.6
≥ 8.8
Water Absorption: %
≤ 4
≤ 1
≤ 0.5
≤ 0.2
≤ 0.1
≤ 0.085
≤ 0.01
Refractoriness: ° C
1300 ° C
1400 ° C
1450 ° C
1580 ° C
1600 ° C
1650 ° C
1800° C
Flexural Strength: Mpa
Wear Rate( at room
temperature, erosion,
100 grinding)%
≤ 5
≤ 4.5
≤ 3.5
≤ 3
≤ 2.5
≤ 1
≤ 0.5

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