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China-Yixing Longly Refractories 99 Alumina Ceramic

Category Ceramic , Oxide , Aluminum Oxide
Manufacturer China-Yixing Longly Refractories Co. Ltd
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
LONGLY selects high quality ceramic fine powder and micropowder as materials, adopts modern advanced molding technology to produce a multitude of ceramic tubes, rods, beads, balls, columns, plates, films and other forms. These ceramic products sintered in high temperature has a large elastic modulus, high mechanical strength, high oxidation resistance at elevated temperatures, excellent thermal conductivity, good electrical insulation, high electric strength, low dielectric loss, stability of electric properties with temperature and frequency variation, high wear-resistance, good corrosion resistance, superior waterproof under temperature mutation and surface machinability. Many of alumina's extinguished properties could be strengthened through variation in manufacturing methods and in chemistry.Applications: Widely used in electronics, electrical appliances, machinery, petroleum, chemical, medical, textile, automobile, metallurgy and aerospace industries and so on.Information Provided by China Yixing Longly Refractories Co. Ltd
Physical Properties Metric English Comments
Bulk Density 3.80 - 3.95 g/cc
0.137 - 0.143 lb/in³
Water Absorption <= 0.0060 %
<= 0.0060 %
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 7.60 - 8.50 µm/m-°C

@Temperature 25.0 - 800 °C
4.22 - 4.72 µin/in-°F

@Temperature 77.0 - 1470 °F
Thermal Conductivity 35.0 W/m-K
243 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air >= 1600 °C
>= 2910 °F
Component Elements Properties Metric English Comments
Al2O3 98 - 99.5 %
98 - 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 15.0 - 16.0 kV/mm
381 - 406 kV/in
DC Breakdown Strength
18.0 kV/mm
457 kV/in
Insulating Strength
Descriptive Properties Value Comments
Refractoriness (°C) >2030
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