Refractoriness (℃): | 1770< Refractoriness< 2000 |
---|---|
Feature: | Long Time Materials |
Type: | Refractory Material |
Shape: | Pipe |
Material: | Alumina |
Color: | Pink and White |
Samples: |
---|
Customization: |
---|
Suppliers with verified business licenses
Item | Unit | AL99.7% | AL99 | AL95 |
Al2O3 content | - | 99.7% | 99% | 95% |
Color | - | Ivory white | Ivory white | Ivory white,white |
Air tightness | - | airtight | airtight | airtight |
Density | g/cm3 | 3.94 | 3.8 | 3.7 |
Straightness | - | 2‰ | 2‰ | 2‰ |
hardness | Moh's hardness | 9 | 9 | 8.8 |
Water absorption | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.2 |
Flexural strength(20ºC) | Mpa | 375 | 340 | 304 |
Compressive strength(20ºC) | Mpa | 2300 | 2210 | 1910 |
Thermal expansion coefficient (25ºC-800ºC) | 105/ºC |
7.6 | 7.6 | 7.6 |
Insulation strength(thickness:5mm) | AC-kv/mm | 10 | 10 | 10 |
Dielectric loss 25ºC@1MHz | - | <0.0001 | <0.0006 | <0.0004 |
Volume resistivity (20ºC) (300ºC) |
Ω·cm3 |
>1014 >1010 |
>1014 >1010 |
>1014 >1012 |
Long-term use temperature | ºC | 1700 | 1600 | 1200 |
Thermal conductivity(25ºC) | W/moK | 35 | 34 | 20 |
Suppliers with verified business licenses