1)metallized alumina ceramic
2)Mo-Mn or W metallized
3)Ni or Sn plating
4)high dielectric strength & high voltage resistivity
Our products produce excellent sealing and connecting performance with high mechanical strength.They can be welded to various king of hard soleder,such as gold,silver and copper.They are extensively used in gas electrical discharge devices,electronics ,power generators,telecom,metallurgy,machinery,aviation and military.
Materials Performance
| Item |
Unit | Performance | |||||
Alumina ceramic |
steatite ceramic | |||||||
90% | 92% | 95% | 96% | |||||
Ceramic Body
| Appearance | colour | - | White,Ivory white,Brown,Black | White,Off-white | |||
Mechanical Characters |
Bulk Density | g/cm3 | ≥3.6 | ≥3.65 | ≥3.7 | ≥3..75 | 2.7 | |
Water Absorption | % | 0 | 0 | |||||
Flexural strength | MPa | 280 | 300 | 310 | 320 | 150 | ||
(HV) Hardness | GPa | 12 | 5.8 | |||||
Thermal Characters |
Coefficient of linear thermal expansion | 20℃~800℃ ×10-6mm/℃ | 6.3~7.3 | 6.4~7.4 | 6.5~7.5 | 6.8~7.8 | 8.0 | |
Thermal Conductivity | W/(m.K) | 12 | 16 | 20 | 23 | 2 | ||
Electrical Characters | (1MHz) Dielectric constant(1MHz) | — | 9~10 | 9~10 | 9~10 | 10 | 7.5 | |
Dielectric loss angle | ×10-4 | ≤6 | ≤5 | ≤4 | ≤3 | 8 | ||
Dielectric Strength | KV/mm | 15 | 20 | 24 | 28 | 18 | ||
Metalized Ceramics |
Gas leakage coefficient | Pa.m3/s | ≤10-8 | - | ||||
Volume resistivity | Ω.cm | ≥1015 | - | |||||
Combined strength | MPa | ≥120 | - | |||||
Thickness of Metal | μm | ≥20 | - | |||||
Company Description
Changsha Ultronic Ceramic Technology Co., Ltd. is located in Changsha City, the capital of Hunan Province.
Since its establishment in September 2010, Ultronic has been devoted to manufacturing alumina ceramics
and steatite ceramics for electric components and industrial ceramics. Now, we have the forming technologies
of hot pressing, dry pressing, injection molding, tape casting, and isostatic pressing. We also have the special
process of surface metallization, glazing, and polishing. Our main products include ceramic thermostat housing,
ceramic rod, metalized ceramic GDT tube, faucet cartridge ceramic disc, ceramic insulating plate and so on.
And we supply to leading companies in respective business, such as and so on.
We have below product categories
Ceramic Substrate
Zirconia Ceramic
Steatite Ceramic Parts
Ceramic Pin/Rod
Ceramic Tube/Ring
Ceramic Lamp Holder
Thermostat Ceramic Parts
Ceramic Faucet Cartridge Discs
Metalized Ceramic Parts