alumina ceramics tube precision casting welding cut metal large
machinery and equipment accessories
product name:alumina ceramic tube
Advantages of alumina ceramic tube :
1. Alumina ceramic has excellent insulation, high-frequency loss is
relatively small but high-frequency insulation is good.
2. Alumina ceramics have the characteristics of heat resistance,
small thermal expansion coefficient, high mechanical strength and
good thermal conductivity.
3.Alumina ceramics have the characteristics of chemical corrosion
resistance and molten metal.
4 , Alumina ceramic non-combustible, stainless solid is not easy to
damage is the incomparable excellent properties of other organic
materials and metal materials.
The wear resistance of alumina ceramics, but the hardness is the
same as that of corundum, can reach the nine level of Mohs hardness
wear resistance to match the super hard alloy.
products index:
| Ceramic characteristic table |
| | name | 99% AL2O3 | 95% AL2O3 |
| physical propertyessential component | essential component | AL2O3≥99% | AL2O3≥95% |
| Density(g/cm3) | 3.85 | 3.6 |
| water absorption% | 0 | 0 |
| sintering temperature | 1690 | 1670 |
| material characters | Hardness(HV) | 1700 | 1600 |
| break off strength | >6500 | >2900 |
| compressive strength | 30000 | 25000 |
| thermal response | maximum service tempera- ture | 1500 | 1400 |
| thermal expansion coefficient | 8 | 7.8 |
| 10-6/℃ |
| 0-1000℃ |
| Heat shock resistance T(℃) | 200 | 220 |
| thermal conductivity W/m.k | 31 | 22 |
| electrical specification | volume resistivity Ω.cm | >1012 | >1012 |
| Insulation destructive power KT/m | 18 | 16 |
| dielectric constant 1MHZ(E) | 9.2-10.5 | 9.0-10 |
Company workshop production pictures:
