Gongtao company specializes in the production and research of machinable ceramic .The main products:Machinable ceramics and tools, with good machining performance, good vacuum, high and low temperature resistance, insulation and acid-corrosion ect properties.It can be widely used in aviation, aerospace, electronics substrates, high temperature insulation skeleton, ion plating, vacuum coating, plasma display mirror,ion accelerators, lasers, and medical devices.
Our machinable ceramic has good machining performance, and can be turning, milling, grinding, drilling, drilling and tapping and other machining by ordinary machine tools and cutting tools.The machining accuracy can reach up to 5μm, finish high up 0.5μ. It has a good vacuum, high and low temperature resistance, insulation and acid and alkali corrosion resistance ect properties.
Thermal shock resistance of machinable ceramic is very good, quenching from 800 °C to 0 °C,no broken, from 200 °C to 0 °C ,the intensity does not change.
The main advantage:
-It can be turned,milled,grinded,drilled and tapped and other machining.
-Precision machining dimensions.
-Non-magnetic.
Item | Standard value | Remarks |
| Density | 2.7g/m³ |
|
| Porosity | 0.096% |
|
| Water absorption | 0.038 |
|
| Hardness | 4-5 | Mohs |
| Color | pure white |
|
| Thermal expansion coefficient | 86×10 -7 /°C | 100°C ~600°C average value |
| Thermal conductivity | 1.68W/m.k | 25°C |
| Working temperature | 800°C |
|
| Bending Strength | 108MPa |
|
| Compress strength | 488 MPa |
|
| Impact Toughness | >2.56KJ/ m 2 |
|
| Modulus of elasticity | 65GPa |
|
| Insertion loss | 1~ 4×10 -3 | Room temperature |
| Dielectric constant | 6-7 | " |
| Dielectric strength | >40KV/mm | Thickness of sample 1mm |
| Bulk density | 1.08×10 14 Ω.cm | 25°C |
| 1.5×10 10 | 200°C |
| 1.1×10 7 | 500°C |
| Gas efficiency at normal temperature | 8.8×10 -9 ml/s. cm 2 | Vacuum experienced for eight hours |
| Helium permeating rate | 1×10 -10 ml/s | After 500C burning,cool to room temperature. |
| 5%HC1 | 0.26mg/ cm 2 | 95°C,24 hours |
| 5%HF | 83mg/ cm 2 | " |
| 50%Na2CO3 | 0.012 mg/ cm 2 | " |
| 5%NaOH | 0.85mg/ cm 2 | " |
Shanghai Gongtao Ceramics Co., Ltd. is one of the most leading and advanced ceramic material companies in China, integrating the design, manufacture and marketing of high-tech ceramics. Brand name "SHANGTAO" was formed more than 20 years ago. We specialize in Alumina products, Zirconia products, Magnesia products, Silicone Nitride products and Alumina Nitride products. We have developed advanced skills and technologies. Our products are widely used in electricity, information, power, automobile and other fields.
Range of Industrial Ceramics: alumina ceramics, zirconia ceramics, titanium oxide ceramics, silicone carbide ceramics, silicon oxide ceramics, special ceramics, high-frequency ceramics, mullite ceramics, general ceramics, refractory ceramics, electronic ceramics, textile ceramics, high purity alumina crucible, electrical ceramics, etc.
SHANGTAO strictly complies with ISO9001 quality management system. Our products are widely used in aerospace, mining machinery, lift, power, paper making, laboratory, nonferrous metal processing, electronics processing, textile machinery and other industries, SHANGTAO provides wholesale and retail services.
We have the largest stocks in Shanghai, professional manufacturing experience, most complete industrial ceramics, rock bottom price, best service, speedy delivery.
Welcome to contact us for cooperation! Also welcome to visit us!
