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Malta High Temperature White 99.7% Alumina Ceramic Tube
Category:
MaltaAlumina ceramic products
Product Description
Aluminum oxide ceramic tube is a ceramic material mainly composed of aluminum oxide (Al2O3), which can be used in aerospace and military equipment,
High purity aluminum oxide powder is a white micro powder with uniform particle size, easy to disperse, stable chemical properties, moderate high-temperature shrinkage performance, and good sintering performance; High conversion rate and low sodium content. This product is the basic raw material for producing heat-resistant, wear-resistant, and corroData Sheet
|
Alumina Ceramic Properties |
96 Alumina Ceramic |
99 Alumina Ceramic |
|
|
Item |
Unit |
Typical Values |
|
|
Physical Properties |
|||
|
Color |
|
White |
Ivory |
|
Density |
g/cm3 |
3.7 |
3.85 |
|
Alumina Content |
% |
96% |
99% |
|
Gas permeability |
|
0 |
0 |
|
Water Absorption |
|
0 |
0 |
|
Mechanical Properties |
|||
|
MONS’ Hardness |
|
|
82 |
|
Vickers Hardness (Hv50) |
Gpa(Kg/mm²) |
15.7(1600) |
15.7(1600) |
|
Flexural Strength(20°C) |
Mpa |
300 |
330 |
|
Compressive Strength(20°C) |
Mpa |
2000 |
2000 |
|
Modulus of Elasticity (20°C) |
Gpa |
275 |
|
|
Poisson's Ratio (20°C) |
|
0.22-0.23 |
|
|
Fracture Toughness(20°C) |
MPam1/2 |
3.5 |
4 |
|
Thermal Properties |
|||
|
Thermal Conductivity(20°C-400°C) |
W(m.K) |
25 |
27.5 |
|
Thermal Expansion Coefficient |
10-6/°C |
6.5-7.5 |
7.6 |
|
Thermal Shock Resistance |
T°C |
200 |
200 |
|
Maximum Use Temperature |
°C |
1600 |
1650 |
|
Electronic Properties |
|||
|
Dielectric Strength |
KV/mm |
>12 |
>10 |
|
Dielectric Constant |
Er |
9-10 |
9.1 |
|
Dielectric Loss Angle(1MHz) |
|
0.0002 |
0.0002-0.0003 |
|
Volume Resistivity(20°C) |
Ω.cm |
>1014 |
>1014 |
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