High Thermal Shock Silicon Nitride Ceramic Insert Positioning Plate with 1200°C Temperature Rating and 70 W/m·K Thermal Conductivity
Silicon Nitride (Si₃N₄) is an advanced ceramic engineered for demanding high-temperature applications. This material maintains exceptional mechanical strength from room temperature up to 1200°C, while its low coefficient of thermal expansion provides outstanding thermal shock resistance. Combined with excellent thermal conductivity, silicon nitride delivers reliable performance in extreme thermal environments.
- High temperature strength retention up to 1200°C
- Superior thermal shock resistance
- Excellent wear resistance and fracture toughness
- Mechanical fatigue and creep resistance
- Non-wetting properties with excellent oxidation resistance
- 0.30mm, 0.5mm, 0.635mm, 1.0mm
- Round ceramic wafers up to 400mm diameter
- Square and rectangular substrates up to 400mm × 500mm
Single or double-side polishing available with surface roughness Ra ≤ 0.4μm
- High thermal conductivity (up to 70 W/m·K) - 3× alumina performance
- Thermal expansion coefficient (3.1×10⁻⁶/°C) matches silicon semiconductor material
- Bending strength twice that of alumina substrates
- Excellent electrical insulation with low dielectric loss
- Multi-layer wiring compatibility for package miniaturization
- Exceptional thermal shock resistance: withstands 10,000 cycles from 0°C to 200°C
- Chemical resistance to oxidation, acids, and alkalis with 10+ year service life
| Property | Unit | Typical Values |
|---|---|---|
| Physical Properties | ||
| Density | g/cm³ | >3.2 |
| Mechanical Properties | ||
| Hardness | HRA | 90 |
| Vickers Hardness (Hv50) | HV0.5 | >1550 |
| Modulus of Elasticity | GPa | 290 |
| Flexural Strength | MPa | >600 |
| Compressive Strength | MPa | 2500 |
| Fracture Toughness | MPa·m¹ᐧ² | >6.0 |
| Thermal Properties | ||
| Maximum Use Temperature | °C | 1200 |
| Thermal Conductivity | W/(m·K) | 15-20 |
| Thermal Expansion Coefficient | 10⁻⁶/°C | >3.1 |
| Thermal Shock Resistance | T°C | 500 |
| Specific Heat Capacity | kJ/kg·K | 700 |
| Electrical Properties | ||
| Dielectric Strength | kV/mm | 1 |
| Volume Resistivity at 20°C | Ω·cm | 1.0×10¹² |
Wuxi Special Ceramic Co., Ltd specializes in advanced ceramic manufacturing including alumina, silicon nitride, zirconia, steatite, boron nitride, cordierite, and mullite products. Our ceramics serve diverse industries including metal welding, electronics, mechanics, assembly, insulation, chemicals, instrumentation, textiles, nuclear industry, and aerospace applications.
We offer custom manufacturing services based on drawings or samples with trial production typically completed within 30 days. Mass production cycles also average 30 days with packaging options including carton or pallet configurations.
Our quality standards are validated through partnerships with major international clients including Toshiba Lighting Group in Japan and Europe, ensuring reliable delivery of high-performance ceramic solutions.
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