Silicon Nitride Ceramic High Performance Ceramic Positioning Pin
Product Overview
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.
Product parameter table
| 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 | …… | …… | …… |
| Main features | - Excellent high frequency electrical insulation
Good wear resistance preservative Strong High hardness
| - Good high temperature strength
- High thermal conductivity
- Strong alkali resistance
- Wear-resistant
- Lightweight
| - Good high temperature strength
- Strong impact resistance
- Strong corrosion resistance
- Lightweight
| - High strength and high impact resistance
- Good self-lubricating
- Strong alkali resistance
- Smooth surface
- Good toughness
|
| The main purpose | - Wear parts
- High temperature parts
- Corrosion resistant parts
| - Machinery Seal
- Sliding parts
- High temperature parts
| - Molten metal parts
- Metal plasticity
- Processed parts
| - Industrial knives
- Pump parts
- Wear parts
|
| Density | Kg/m³ | 3.9*10 | 3.16*10 | 3.3*10 | 6.0*10 |
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 |
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 | …… |
Product features
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.
Applications
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.
Product Picture
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.
Product packaging
Packed in carton
FAQ
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.
