High Temperature Resistance Alumina Ceramic Rods
Lonci manufactures all kinds of ceramic rods, providing customized and standard sizes for different applications. Advanced ceramic rods provides a broad range of engineering properties: High Temperature-Superior Strength-Corrosion Resistance-Thermal & Electrical Insulation along with other specialized characteristics.
Chemical Composition and Physical Properties
95 Series |
99 Series |
997 Series |
Steatite |
Zr₂O Y-PSZ |
Al₂O₂+Zr₂O |
|
Al₂O₃(%) |
≥95 |
≥99 |
≥99.7 |
|||
SiO₂(%) |
≤2.3 |
＜0.2 |
＜0.04 |
＜0.2 |
＜0.04 |
|
Fe₂O3(%) |
＜0.1 |
＜0.1 |
＜0.05 |
＜0.1 |
＜0.05 |
|
Alkaline Substances(%) |
＜0.1 |
＜0.1 |
＜0.08 |
＜0.1 |
＜0.08 |
|
Density(g/cm³) |
3.7 |
3.87 |
3.89 |
2.7 |
3.87 |
3.89 |
Hardness(Mohs) |
8.8 |
9 |
9 |
9 |
9 |
|
Flexural strength(Mpa) |
300 |
340 |
390 |
150 |
1000 |
600 |
Compressive strength(Mpa） |
3400 |
3600 |
3900 |
900 |
3000 |
3600 |
Modulus of elasticity(Gpa) |
350 |
380 |
390 |
120 |
205 |
350 |
Impact resistance(Mpa m1/2) |
4.0 |
5.0 |
5.2 |
8 |
7.5 |
|
Webull modulus(m) |
10 |
10 |
12 |
22 |
18 |
|
Vickers hardness(HV0.5) |
1800 |
1900 |
2000 |
1300 |
1600 |
|
Thermal expansion coefficient(10-6k -1) |
5.0-8.3 |
5.4-8.3 |
5.5-8.4 |
6.0-9.0 |
10 |
6.0-8.6 |
Thermal conductivity(W.mK） |
24 |
27 |
28 |
2.0-2.5 |
＜2 |
18 |
Thermal shock resistance（T℃） |
250 |
270 |
280 |
100 |
270 |
320 |
Volume resistivity at 20℃（Ωcm） |
＞1014 |
＞1014 |
＞1015 |
＞1013 |
＞1010 |
＞1013 |
Dielectric strength(kv/mm) |
20 |
25 |
30 |
20 |
||
Operating temperature in short time(℃) |
1650 |
1800 |
1850 |
1450 |
||
Operating temperature in long time(℃) |
1530 |
1650 |
1700 |
1250 |
||
color |
pink,white |
white,ivory |
ivory |
white |
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