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| Categories | Silicon Nitride Ceramic |
|---|---|
| Brand Name: | KEGU |
| Place of Origin: | China |
| Price: | 200-500 yuan/kg |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability: | 2,000 pcs/month |
| Packaging Details: | Strong wooden box for Global shipping |
| Model Number: | Customizable |
| Material: | Silicon Nitride |
| Composition:SiC: | ＞85% |
| Color: | Black |
| Density: | 3.20-3.26g/cm3 |
| Max. Service Temp: | 1450℃ |
| Flexural Strength: | 250MPa |
| Sample: | Customizable |
| Chemical Stability: | High |
| Apparent Porosity: | 0-0.1% |
| Elastic Modulus: | 300-320GPa |
| Compression Strength: | >1500MPa |
| Vickers Hardness(HV0.5): | 15-16GPa |
| Thermal Conductivity: | 20-25W/(m.k) |
| Specific Resistivity: | 10^14Ω·cm |
| Company Info. |
| Shaanxi KeGu New Material Technology Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Product Description
Engineered for extreme industrial environments, our high-performance silicon nitride ceramic sealing components deliver unmatched durability and reliability in aluminum processing applications. These materials offer superior thermal and mechanical properties, forming the foundation for innovative equipment like the L-shaped high thermal conductivity submerged heating appliance.
Unmatched Performance:
Optimal for Low-Pressure Die Casting: High density, strength, and exceptional thermal shock resistance (ΔT 400–500°C) make Si3N4 the premier choice for sealing tubes and valves.
Superior Wear Resistance: Outperforms aluminum titanate and alumina ceramics, ensuring long-term airtightness and reducing maintenance frequency.
Excellent High-Temperature Strength: Maintains structural integrity under frequent thermal cycling, ensuring prolonged service life.
Design & Installation Note:
While silicon nitride offers exceptional strength, its ceramic
nature requires careful handling. Avoid large mechanical shocks by
ensuring proper design and installation of lifting and transmission
equipment.
Category | Property | Unit | 99% Al₂O₃ | S-SiC | ZrO₂ | Si₃N₄ |
Physical | Density | g/cm³ | 3.9 | 3.1 | 6.0 | 3.2 |
Water Absorption | % | 0 | 0.1 | 0 | 0.1 | |
Sintering Temperature | °C | 1700 | 2200 | 1500 | 1800 | |
Mechanical | Hardness (HV) | HV | 1700 | 2200 | 1300 | 1400 |
Flexural Strength | MPa | ~343 | ~392 | ~882 | ~686 | |
Compressive Strength | MPa | ~2942 | ~1961 | ~1961 | ~2255 | |
Thermal | Max Working Temperature | °C | 1500 | 1600 | 1300 | 1400 |
Thermal Expansion Coefficient (0-1000°C) | 10⁻⁶/°C | 8.0 | 4.1 (0-500°C) | 9.5 | 2.0 (0-500°C) | |
5.2 (500-1000°C) | 4.0 (500-1000°C) | |||||
Thermal Shock Resistance | ΔT (°C) | 200 | 250 | 300 | 400-500 | |
Thermal Conductivity (25°C) | W/m·K | 31 | 100 | 3 | 25 | |
Thermal Conductivity (300°C) | W/m·K | 16 | 100 | 3 | 25 | |
Electrical | Volume Resistivity (20°C) | Ω·cm | >10¹² | 10⁶–10⁸ | >10¹⁰ | >10¹¹ |
Dielectric Strength | kV/mm | 18 | Semiconductor | 9 | 17.7 |
Key Benefits for Your Operation:
Extended Component Lifespan: Reduced downtime and replacement costs.
Consistent Sealing Performance: Maintains airtight integrity under thermal stress.
Enhanced Process Reliability: Minimizes leaks and process interruptions in die casting.
Applications: Sealing pipes, valves, and bespoke components for low-pressure die casting machines, aluminum transfer systems, and high-temperature industrial fluid handling.
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