Yixing Weite Chinaware Co., Ltd
Weite Ceramics Co., Ltd
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Silicon Nitride Ceramic High Performance Ceramic Positioning Pin
The silicon nitride ceramic positioning pin is a high-performance ceramic positioning pin, which has extremely high hardness, high thermal shock resistance, electrical insulation, high temperature resistance, high tensile strength and compressive strength, and reduces cold welding spatter. In the field of welding positioning pin products, the precise matching and positioning of the welding plate and the welding nut in projection welding at a high temperature of 800 degrees Celsius is no different, and the effect is better than other materials.
| Parameter | Air pressure sintered silicon nitride |
| Density | >3.2g/cm3 |
| Si3N4 content | >92% |
| Flexural strength | >600Mpa |
| Compressive strength | >1500Mpa |
| Thermal conductivity (W/mk) | 16-22 |
| Porosity | 0 |
| Coefficient of thermal expansion (RT-1000℃) | 3.2 |
| Maximum working temperature (in air) | 1400℃ |
| Hardness (HRC) | >90-95 |
| Material Project | Alumina AL203 | Silicon carbide sic | Silicon nitride sin | Silicon nitride sin | ||||
| Color | Ivory | black | black | Milky white, gray black | ||||
| Content(%) | 99.5 | …… | …… | …… | ||||
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| Density | Kg/m³ | 3.9*10 | 3.16*10 | 3.3*10 | 6.0*10 | |||
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Mechanical behavior
| Vickers hardness | Gpa | 16.0 | 23.0 | 14.0 | 13.2 | 12.7 | |
| Flexural strength | Mpa | 360 | 450 | 1020 | 1000 | 1470 | ||
| Compressive strength | Mpa | 2350 | …… | …… | …… | …… | ||
| Fracture toughness | Mpa | 4 | 2-3 | 7 | 4-5 | 4-5 | ||
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Thermal performance
| Linear expansion coefficient | 40-400℃ | ×10-5/℃ | 7.2 | 3.7 | 2.8 | 10.5 | 10.8 |
| 40-800℃ | 8.0 | 4.4 | 3.3 | 11.0 | 11.3 | |||
| Thermal conductivity | W/(m·k) | 32 | 200 | 27 | 3 | 3 | ||
| Specific heat | J/(kg·k) | 0.78*10 | 0.67*10 | 0.65*10 | 0.46*10 | 0.46*10 | ||
| Thermal shock resistance (in water) | ℃ | 250 | …… | ＞800 | 300 | 350 | ||
| Electrical performance | Dielectric strength | V/m | 15*105 | …… | 13*105 | 11*105 | …… | |
| Volume resistance(20℃) | Ω·cm | ＞1014 | 108 | 1014 | 1013 | …… | ||
| Dielectric constant | …… | 9.6 | …… | 9.9 | 33 | …… | ||
| Loss factor | ×10-4 | 10 | …… | …… | 520 | …… | ||
Silicon nitride ceramic itself has the characteristics of lubricity, wear resistance, high temperature resistance, resistance to cold and hot shocks, stable structural performance, good fracture toughness, etc. It has strong corrosion resistance and is suitable for various harsh environments.
Widely used in industries such as aerospace, military industry, nuclear energy, machinery, metallurgy, molds, petrochemicals, automation equipment, large mechanical bushing high-strength accessories, automotive and new scientific research fields.
We can customize various types of non-standard special-shaped ceramic positioning pins and special-purpose special-shaped ceramic positioning pins according to customers' use environment, use requirements and required material properties.
Packed in carton
1. Are you a businessman or a manufacturer?
We are a company, we have our own factory
2. How long is your delivery time?
Negotiable
3. Can the product be customized?
Can be customized
4. What is the product packaging?
Carton or according to customer requirements
We can customize various types of non-standard special-shaped ceramic positioning pins and special-purpose special-shaped ceramic positioning pins according to customers' use environment, use requirements and required material properties.