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China-Yixing Longly Refractories 99 Alumina Ceramic Tubes & Rods

Category Ceramic , Oxide , Aluminum Oxide
Manufacturer China-Yixing Longly Refractories Co. Ltd
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF China-Yixing Longly Refractories 99 Alumina Ceramic Tubes & Rods.pdf
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Material Notes:
LONGLY's alumina ceramic tubes and rods (the tolerances of +/- 0.02mm could be reached by mechanical or electronic finishing or mirror surface finishing) have high hardness, wear resistance, insulation and high temperature resistance. Alumina ceramic tubes are mainly applicable to the material conveying with wear resistant and heavy scouring resistant demands, such as material conveying pipelines for coal-fired power generation, metallurgical and geological industries. Meanwhile they can be used as fuse insulating tube on the electric and electronic appliances. Alumina ceramic rods are used as resistor's ceramic matrix and ceramic top pillar on two-metal thermostat.Information Provided by China Yixing Longly Refractories Co. Ltd
Physical Properties Metric English Comments
Bulk Density 3.80 - 3.90 g/cc
0.137 - 0.141 lb/in³
Water Absorption <= 0.0020 %
<= 0.0020 %
Mechanical Properties Metric English Comments
Hardness, Mohs 9.0
9.0
Flexural Strength >= 580 MPa
>= 84100 psi
cold bending
Compressive Strength >= 560 MPa
>= 81200 psi
Ambient
Thermal Properties Metric English Comments
CTE, linear 7.80 - 8.30 µm/m-°C

@Temperature 25.0 - 800 °C
4.33 - 4.61 µin/in-°F

@Temperature 77.0 - 1470 °F
Thermal Conductivity 33.0 W/m-K
229 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air >= 1600 °C
>= 2910 °F
Component Elements Properties Metric English Comments
Al2O3 98.2 - 99.5 %
98.2 - 99.5 %
Electrical Properties Metric English Comments
Volume Resistivity >= 1.00e+16 ohm-cm

@Temperature 100 °C
>= 1.00e+16 ohm-cm

@Temperature 212 °F
Dielectric Strength 15.2 - 16.7 kV/mm
386 - 424 kV/in
DC Breakdown Strength
19.0 kV/mm
483 kV/in
Insulating Strength
Descriptive Properties Value Comments
Refractoriness (°C) >2030
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