High Alumina Ceramic Furnace Tube
Alumina purity: 99.6%
Color: Lvory
Sintering temperature: 1810 oCli>
Max. working temperature: 1800 oC
Sag Temp. Unsupported Tube: 1600 oC
Electric Furnace Alumina Tube
Features:
1, Extreme high temperature stability under reducing, inert and high vacuum condition under high temp. up to 1800C,
2, Extreme wear and abrasion resistance,
3, Chemical corrosion resistance under high temperature,
4, High dielectric properties,
5, Gas tight for many applications to provide protective atmospheres or high vacuum at high temperature to eliminate contamination or impurity,
6, Low material cost and custom size available.
Specifications:
Range of Outside diameter, 3mm to 100mm,
Range of total Length, 10mm to 1300mm.
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Chemical Composition(%)
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Al2O3
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>99.6
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SiO2
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<0.1
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Fe2O3
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<0.05
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R2O
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<0.1
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Standard Sizes:
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OD x ID x Length (mm)
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28 x 22 x 200-1500mm
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30 x 24 x 200-1500mm
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32 x 26 x 200-1500mm
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35 x 28 x 200-1500mm
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40 x 30 x 200-1500mm
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50 x 40 x 200-1500mm
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60 x 50 x 200-1500mm
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70 x 60 x 200-1500mm
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80 x 70 x 200-1500mm
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90 x 80 x 200-1500mm
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100 x 90 x 200-1500mm
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120 x 110 x 200-1500mm
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Other size can be produced according to customer’ s requirement.
Note: Alumina products are sensitive to thermal shock. Try to warm up the furnace chamber slowly. A heating rate between 150 oC~300 oC/hour is recommended for the first 1-1.5hours, so that the alumina products can be evenly heated to reduce the impact of thermal shock.