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Rulon Bearings

China-Yixing Longly Refractories 95 Alumina Ceramic
Categories: Ceramic; Oxide; Aluminum Oxide

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

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Physical PropertiesMetricEnglishComments
Density 3.50 - 3.60 g/cc0.126 - 0.130 lb/in³
Water Absorption <= 0.080 %<= 0.080 %
 
Mechanical PropertiesMetricEnglishComments
Hardness, Mohs 9.09.0
Flexural Strength >= 520 MPa>= 75400 psicold bending
Compressive Strength >= 500 MPa>= 72500 psiAmbient
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+15 ohm-cm
@Temperature 100 °C
>= 1.00e+15 ohm-cm
@Temperature 212 °F
Dielectric Strength 15.0 kV/mm381 kV/inInsulating Strength
 17.6 - 20.0 kV/mm447 - 508 kV/inDC Breakdown Strength
 
Thermal PropertiesMetricEnglishComments
CTE, linear 6.50 - 7.80 µm/m-°C
@Temperature 25.0 - 800 °C
3.61 - 4.33 µin/in-°F
@Temperature 77.0 - 1470 °F
Thermal Conductivity 26.0 W/m-K180 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air >= 1500 °C>= 2730 °F
 
Component Elements PropertiesMetricEnglishComments
Al2O3 92 - 96 %92 - 96 %
 
Descriptive Properties
Refractoriness (°C)>2000

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CYXLR016 / 99318

Aluminum Castings

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