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

Specifications

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
 
Features:
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
 
Application:
Electric appliance industry
Automotive industry
Mechanical industry
Engineer industry
 
Chemical competent
Al2O3
≥ 99.5%
SiO2
< 0.2%
Fe2O3
< 0.1%
Alkaline matter
< 0.1%
Density
3.9 g/cm3
Hardness
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
20kv/cm
Expansion coefficient
8*10(-8)
Temperature for use
Long-term: 1600º C Short-term: 1800º C
Chill and abrupt heat
1500º C~room temperature not cracking thrice.
Material
65 Al2o3
75 Al2o3
80 Al2o3
85 Al2o3
90 Al2o3
95 Al2o3
99 Al2o3
Al2o3
65%
75%
80%
85%
90%
93%
99.3%
Fe2o3
≤ 4
≤ 2
≤ 1.5
≤ 1.0
≤ 0.5
≤ 0.5
≤ 0.3
Desnsity: g / cm3
2.8
3.10
3.20
3.40
3.50
3.60
3.85
Vickers Hardness
7.5
≤ 7.8
≥ 8
≥ 8.6
≥ 8.8
9
9
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
80
100
150
180
200
240
280
Wear Rate( at room
temperature, erosion,
100 grinding)%
≤ 5
≤ 4.5
≤ 3.5
≤ 3
≤ 2.5
≤ 1
≤ 0.5

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