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Product Details:
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| Bulk Density: | 2.2-2.4g/cm3 | Using Temperature: | <1450℃ |
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| Color: | White | Package: | Carton Box |
| Application: | Refractory, Industrial Ceramic | Diameter: | Customized |
| Highlight: | refractory alumina ceramic washer,high strength alumina ceramic washer,high temperature alumina washers |
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Alumina ceramic washer
1. Material data
| Name | Alumina | Dense Cordierite | Porous Cordierite | Cordierite-Mullite | Mullite | Corundum mullite | |
| Density(g/cm3) | 2.0~2.3 | 2.1 ~2.5 | 1.5 ~1.9 | 1.8~2.3 | 2.0 ~2.5 | 2.3 ~2.7 | |
| Coefficient of heat expansion(×10-6K-1)(20~800°C) | ≤5 | ≤3.5 | ≤3.0 | ≤3.5 | ≤5 | ≤6 | |
| Specific Heat (J/Kg.K)(20~1000°C) | 900~1150 | 900~1100 | 900~1100 | 900~1150 | 1000~1150 | 1100~1300 | |
| Thermal Conductivity (W/m.k) (20~1000°C) | 1.5~2.0 | 1.5~2.5 | 1.2~1.8 | 1.5~2.0 | 1.5~2.0 | 1.5~2.5 | |
| Impact Thermal Resistance(°C/min) | ≥300 | ≥300 | ≥350 | ≥350 | ≥350 | ≥300 | |
| Max. Working Tem.(°C) | 1350 | 1300 | 1300 | 1320 | 1450 | 1550 | |
| Water absorption(%) | 15-25 | ≤2 | 15~25 | 15 ~25 | 15~25 | 15 ~25 | |
| Compressive strength(MPa) | ≥28 | ≥28 | ≥25 | ≥25 | ≥28 | ≥30 | |
| Chemical composition (%) | Al2O3 | 55 ~65 | 25 ~38 | 28 ~38 | 40~52 | 60 ~70 | 70 ~80 |
| SiO2 | 25~35 | 50 ~60 | 45 ~55 | 45 ~55 | 25 ~35 | 15 ~25 | |
| MgO | 1~3 | 5 ~10 | 11 ~14 | 7~9 | 0 ~1 | 0 ~2 | |
| others | <5 | <5 | <5 | <5 | <5 | <5 | |
2. Advantages
1) A variety of specifications available.
2) Satisfy various technical request
3) Lower medium spoilage
4) Good insulation performance and high temperature resistance
5) Stiffness texture
6) Used in all electric products and electric heating products
7) OEM, ODM and OBM are welcomed
3. Application:
1) Electric appliance industry
2) Automotive industry
3) Mechanical industry
4) Engineer industry
Contact Person: Mr. Bruce
Tel: 86-18351508304
Fax: 86-510-8746-8690
