Customization: | Available |
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Classification: | High-Alumina |
Feature: | Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Light Weight, Low Thermal Conductivity |
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Ceramic ring: Wear-Resistant alumina ceramic ring is a product made of special corundum ceramics, in which Al2O3 is the main raw material, rare metal oxides as the flux. It is calcined at a high temperature of 1,700ºC and then combined with high-strength organic/inorganic binders.
ITEM | UNIT | Alumina|A950 | Alumina|A990 |
Main Conten | _ | 95%Al203 | 99%Al203 |
Color | _ | White /Pink | Ivory |
Density | g/cm3 | 3.7 | 3.85 |
Vickers Hardness | Gpa | 14 | 17 |
Flexural Strength | Mpa | 310 | 360 |
Compressive Strength | Mpa | 2,200 | 2,500 |
Electrical Resistivity | Ω-cm | >10¹ | >1014 |
Dielectric Strength | KV/mm | 15 | 17 |
Dielectric Constant | 1 MHz | 8 | 9 |
Thermal Conductivity | W/m.K | 25 | 29 |
Max.Working Temperature | ºC/°F | 1,500/2,730 | 1,650/3,000 |
Resistance to Thermal Shock | ∠T(ºC) | 210 | 230 |
Thermal Expansion Coefficient (25-1,000ºC) | 10/K | 7-9 | 7-9 |