Big Size Al2O3 Advanced Industrial Ceramics , White Ceramic Sharpening Rod

99% alumina ceramic tube big size Al2O3 / alumina ceramic tubes for sale

Product Description

The applications for alumina advanced ceramics are heavy-duty forming tools, substrates and resistor cores in the electronics industry, tiles for wear protection and ballistics, thread guides in textile engineering, seal and regulator discs for valves, heat-sinks for lighting systems, protection tubes in thermal processes or catalyst carriers for the chemicals industry.

95%/99%/99.7% AI203 Ceramic Material Parameters

Item Test Condition 95% AI203 99% AI203 99.7% AI203

Bulk Density (g/cm3) >3.6 3.89 3.96

Maximum Use Temp(°C) 1450 1600 1650

Water Absorption(%} 0 0 0

ROHS Hardness >85 >89 >89

Flexural Strength MPa(psiX l〇3) 20°C 358(52) 550 550

Compressive Strength MPa(psi X l〇3) 20°C 2068(300) 2600(377) 2600(377)

Fracture Toughness Mpa m’/j K(lc) 4-5 5.6 6

Thermal Expansion

Coefficient{lXi〇-6/°C)

25-1000〇 C 7.6 7.9 8.2

Thermal Conductivity

Coefficient(W/m° K}

206C 16 30.0 30.4

Thermal Shock Resistance(°C) ATc 250 200 200

Dielectricity Constant 1MHz.25〇 C 9 9.7 9.7

Dielectric Strength (ac-kV/mm)(acV/mil)

8.3(210) 8.7(220) 8.7(220)

Volume Resistivity(ohm-cm) 100°C >1013 >1014 >1014

Advantages

Alumina ceramics are the most versatile of the advanced technical ceramics stronger than the traditional ceramics chemically inert - excellent corrosion resistance outstanding electrical insulators, even at very high temperatures extremely hard - excellent abrasion resistance are almost unaltered at 1000°C useable up to 1700° All alumina bodies possess very good mechanical properties such as hardness and compressive strength. They also hold up well under harsh conditions such as acid corrosion, high wear areas, and sliding abrasion. They also possess very good electrical insulation properties and have very specific thermal conductive and thermal expansion rates.

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