The alumina tube/rod/bar is a ideal wear-resistance material for delivering the sand,mine,ash dregs and molten aluminium ,has excellent conductivity,high machinery strength and high-temperature resistance,can resist to the acid,high temperature,corridion and static electricity.
Al2O3 is the most important technical ceramic material. It is characterized by high hardness, high compressive strength and corrosion resistance even at high temperatures. Through the content of Al2O3 in the material, these properties can be tailored to the application of the customer.
|
Name |
Unit |
1 |
2 |
3 |
|
Al2O3 |
% |
99.7 |
99.3 |
85 |
|
SiO2 |
% |
0.1 |
— |
— |
|
Density |
g/cm3 |
3.95 |
3.88 |
3.2 |
|
Absorbing water rate |
% |
0 |
0.01 |
0.2 |
|
Compression strength |
MPa |
450 |
350 |
200 |
|
20°C |
Torr/L.sec |
10-11 |
10-11 |
10-11 |
|
20—1000°C |
mm.10-6/°C.m |
8.6 |
8.2 |
8.2 |
|
Heat-conduction rate |
W/m.k |
25 |
25 |
25 |
|
Dielectric strength |
KV/mm |
20 |
20 |
15 |
|
20°C |
Ohm/cm |
1014 |
1014 |
1014 |
|
Dielectric constant |
1000°C MΩ |
≥0.08 |
≥0.08 |
≥0.08 |
|
1300°C MΩ |
≥0.02 |
≥0.02 |
≥0.02 |
|
|
Heat resistant shaking Use temperature at most |
1550°C 6 times: no crack 6 |
1550°C 6 times: no crack 6 |
1300°C 3 times: no crack 3 |
|
|
°C |
1900 |
1800 |
Sunjiawan Industry Park Liling Hunan China 412200
+086-731-23183388 23181338 23181339
master@fq-porcelain.com