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By certification 
Data Sheet
Item |
Unit |
Typical Values |
Physical Properties | ||
Color |
White/Grey |
|
Chemical Formula |
/ |
AIN |
Gas permeability |
0 |
|
Water Absorption |
0 |
|
Mechanical Properties | ||
Rockwell Hardness(45N) |
R45N |
40 |
Vickers Hardness (Load 500g) |
Gpa(Kg/mm²) |
11.5(1175) |
Flexural Strength |
Mpa |
50~60 |
Compressive Strength |
Mpa |
280~500 |
Modulus of Elasticity(25°C) |
Gpa |
65 |
Thermal Properties | ||
Thermal Conductivity |
W/m·K |
320 |
Thermal Expansion Coefficient |
10-6/ºC |
4.5×10-6ºC |
Thermal Shock Resistance |
T°C |
200 |
Maximum Use Temperature |
°C |
2200 |
Electronic Properties | ||
Dielectric Constant |
Er |
3.5-3.7 |
Volume Resistivity(400~600ºC) |
Ω.cm |
2.3~5.6M |
(1) High thermal conductivity (about 320W / m · K), close to BeO and SiC, more than 5 times that of Al2O3;
(2) The thermal expansion coefficient (4.5×10-6°C) is matched with Si (3.5-4×10-6°C) and GaAs (6×10-6°C);
(3) Excellent electrical properties (dielectric constant, dielectric loss, volume resistivity, dielectric strength);
(4) Good mechanical properties, higher flexural strength than Al2O3 and BeO ceramics, can be sintered at normal pressure;
(5) Good optical transmission characteristics;
(6) Non-toxic;
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