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Help CenterSilicon Nitride Bearing Ball, Ceramic Valve Ball
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silicon nitride bearing ball, ceramic valve ball
1. Product detail:
1.Manufacture silicon nitride balls from 1995;
2.Silicon nitride ball powder import form Europe;
3.Competitive price and satisfaction services;
4.Plenty stocks.
2. Packing:
Standard exporting vacuum package, Carton box; Or according customer demand.
3. Grade of silicon nitride balls:
Grade |
Gauge |
Ball subgauge |
Ball diameter variation |
Ball lot diameter variation |
Deviation from spherical form |
Surface roughness |
G5 |
±5 |
±0.4 |
0.13 |
0.25 |
0.13 |
0.014 |
G10 |
±10 |
±0.4 |
0.25 |
0.5 |
0.25 |
0.020 |
G16 |
±10 |
±0.8 |
0.4 |
0.8 |
0.4 |
0.025 |
G20 |
±10 |
±0.8 |
0.5 |
1 |
0.5 |
0.032 |
G24 |
±12 |
±0.8 |
0.6 |
1.2 |
0.6 |
0.040 |
G28 |
±12 |
±0.8 |
0.7 |
1.4 |
0.7 |
0.050 |
G40 |
±16 |
±1.6 |
1 |
2 |
1 |
0.080 |
G60 |
±16 |
±2.4 |
1.5 |
3 |
1.2 |
0.1 |
G100 |
±40 |
±4 |
2.5 |
5 |
2.5 |
0.125 |
G200 |
±60 |
±6 |
5 |
10 |
5 |
0.150 |
4. Silicon Nitride(Si3N4)Ceramic Properties:
|
Density g/cm3 |
Relative density % |
Elastic modulus GPa |
Compression strength ratio(25℃)% |
Hardness(HV)GPa |
3.260.02 |
>99.5 |
300~320 |
40~50 |
16 - 20 |
|
Fracture toughness /MPa•m1/2 |
Bending trength MPa |
Poisson's ratio |
Linear expansion coefficient 10-6K-1 |
Webuller modulus |
6.0~9.0 |
600~1000 |
0.25 |
3.1~3.3 |
12~15 |
|
Thermal conductivity W•(m•K)-1 |
Specific resistance ratio |
Corrosion resistance |
Size stability |
Magnetic |
15~20 |
1018 |
Excellent |
Excellent |
None |
5. Application:
It is widely used in aerospace, mechanical industry, chemical industry and petroleum industry. Specified for use in such high-technology industries such as hybrid bearings, aerospace and defense.
6. R&D TEAM
1.We have professional R&D Dept. and advanced facilities;
2.We have the R&D team of over 50 people and over 100% of them have tertiary education background;
3.Products are developed by the most creative professionals, and with world level advanced technical facilities that are qualified to achieve professional test.
7. Every step quality control
1.Raw material checking when suppliers deliver to our factory to ensure no quality problem at the very beginning;
2.Instrument and equipment checking every time before use.
3.Size checking, roundness checking, crushing load test etc. by special measuring tool.
8. Customer & Fair
We have been to a lot fairs and the latest fair is 2015 HANNOVER MESSE Germany.
9. Comapny
Our factory was founded in 1963, Beijing Sinoma Synthetic Crystals Co, LTD.Is a hitech state enterprise,
belongs to the China National Materials Group Co., Ltd. An excellent technical team headed by the state
level experts has built up, which provides a reliable guarantee for the continuous and rapid technological
development.
10. Contact
Please contact us for more detail and correct products!
Whatsapp: 86+13153371540
Send Inquiry to This Supplier
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