Extreme high temperature stability under reducing, inert and high vacuum condition under high temperature up to 1800C.
Extreme wear and abrasion resistance.
Chemical corrosion resistance under high temperature.
High dielectric properties.
Gas tight for many applications to provide protective atmospheres or high vacuum at high temperature to eliminate contamination or impurity.
Low material cost and custom size available.
| Material |
85 Al2o3 |
90 Al2o3 |
95 Al2o3 |
99 Al2o3 |
| Al2o3 |
85% |
90% |
93% |
99.30% |
| Fe2o3 |
≤ 1.0 |
≤ 0.5 |
≤ 0.5 |
≤ 0.3 |
| Desnsity: g / cm3 |
3.4 |
3.5 |
3.6 |
3.85 |
| Vickers Hardness |
≥ 8.6 |
≥ 8.8 |
9 |
9 |
| Water Absorption:% |
≤ 0.2 |
≤ 0.1 |
≤ 0.085 |
≤ 0.01 |
| Refractoriness:°C |
1580 °C |
1600 °C |
1650 °C |
1800°C |
| Flexural Strength:Mpa |
180 |
200 |
240 |
280 |
Wear Rate( at room temperature, erosion,
100 grinding)% |
≤ 3 |
≤ 2.5 |
≤ 1 |
≤ 0.5
|
| Item |
Testing condition |
Unit |
steatite |
| Bulk density |
|
g/cm3 |
≥2.6 |
| Flexural Strength |
|
N/m2×103 |
1.37 |
| Coefficient of linear expansion |
20~800°C |
×10-6/°C |
≤8 |
| Permittivity |
1MHz |
|
≤7.5 |
| 10GHz |
|
/ |
| Insertion loss |
1MHz |
×10-6 |
≤8.0 |
| 10GHz |
×10-6 |
/ |
| Bulk density resistance |
100°C |
Ω·Cm |
>1012 |
| Puncture strength |
|
KV/mm |
20 |
| Thermal conductivity |
20°C |
W/m·k |
2.9 |
| Feature |
Application |
| 1.Great mechanical strength |
Electric appliance industry Automotive industry |
| 2.High softening temperature |
| 3.Good resistance to thermal impact |
| 4.Small thermal expansion coefficient |
Mechanical industry Engineer industry |
| 5.Good chill and abrupt heat properties |
| 6. Resistance to acid and alkali corrosion |
Audited Supplier 
Audited Supplier 
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