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Product Description
 | Alumina ring Alumina ceramic is the most mature of the engineering ceramics, offering excellent electrical insulation properties together with high hardness and good wear resistance |
Features of Al2o3 ring 1) High purity: Al203> 99%, Good chemical resistance 2) Good temperature resistance: Long-term use in 1600°C, short-term in 1800°C |  |
 | Advantages of ceramic ring 1. low thermal conductivity2. excellent thermal shock resistance 3. light weight 4. outstanding electrical resistivity 5. excellent chemical corrosion-resistant performance |
| Alumina ring Widely used in electronics, electrical equipment, instrument and apparatus, household appliances, electric vacuum device, communication equipment, temperature control switch ect. |  |
Alumina Purity | 92% | 95% | 96% | 99% | 99.6% |
颜色 Color | White | White | White | Ivory White | White |
体积密度 Volume density(g/cm3) | 3.45 | 3.5 | 3.7 | 3.75 | 3.9 |
吸水率 Water Absorption | 0 | 0 | 0 | 0 | 0 |
抗弯强度 Flexural Strength | 300Mpa | 300Mpa | 320Mpa | 330Mpa | 330Mpa |
维氏硬度 Vickers hardness | 1300 | 1400 | 1400 | 1800 | 1800 |
介电常数 Dielectric Constant (at 1MHZ 25℃) | 10 | 10 | 10 | 10 | 10 |
弹性模量 Modulus of elasticity | 350Gpa | 350Gpa | 350Gpa | 370Gpa | 370Gpa |
热导率 thermal conductivity (30℃) | 18W/M.K | 24W/M.K | 24W/M.K | 25W/M.K | 28W/M.K |
体积电阻率 Volume resistivity | 10^14Ω•cm | 10^14Ω•cm | 10^14Ω•cm | 10^14Ω•cm | 10^15Ω•cm |
介电强度 Dielectric strength | 20KV/mm | 20KV/mm | 20KV/mm | 20KV/mm | 30KV/mm |
Company Profile
Packaging & Shipping
Packing Details | We will packing by professional export packing,safety against breakage, finally into the wooden cases/ carton/pallet or customized package. We have ERP authentication. |
Delivery Details | We can deliver by SEA,air,rail transportation,the China-Europe Railway Express etc. TNT, DHL,UPS, FEDEX, EMS，S.F EXPRESS etc. |
| 1. Sample service | 2. Optimal price | 3. Customized logo |
| 4. Fast feedback | 5. Customized size | 6. Safety package |
| 7. ISO9001 | 8. Aftersale service | 9. Low procurement risk |
