Precision Si3N4 Silicon Nitride Ceramic Substrate 0.3mm to 1.0mm Thickness with 70 W/mK Thermal Conductivity
Silicon Nitride (Si3N4) is an advanced ceramic material engineered for high-temperature applications. It maintains exceptional strength from room temperature up to 1200°C, offers excellent thermal shock resistance due to its low coefficient of thermal expansion, and provides superior thermal conductivity.
- Available thicknesses: 0.3mm, 0.5mm, 0.635mm, 1.0mm
- Maximum round wafer diameter: 400mm (in 3mm, 4mm, 5mm thickness)
- High thermal conductivity up to 70 W/m·K (3x higher than alumina ceramic)
- Exceptional thermal shock resistance up to 500°C temperature differential
- Maintains mechanical strength up to 1200°C operating temperature
| Item | Unit | Typical Values |
|---|---|---|
| Physical Properties | ||
| Density | g/cm³ | >3.2 |
| Mechanical Properties | ||
| Hardness | HRA90 | - |
| Vickers Hardness (Hv50) | HV0.5 | >1550 |
| Modulus of Elasticity | GPa | 290 |
| Flexural Strength | MPa | >600 |
| Compressive Strength | MPa | 2500 |
| Fracture Toughness | MPa·m¹/² | >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 producing high-performance ceramic materials including alumina, silicon nitride, zirconia, steatite, boron nitride, cordierite, and mullite products. Our ceramics are widely used in metal welding, electronic conductors, mechanical assemblies, insulation systems, chemical processing, instrumentation, textiles, nuclear industry, and aerospace applications.
- Trial production available based on drawings or samples (30 days)
- Mass production typically completed within 30 days
- Flexible packaging options (carton or pallet)
- Established global clientele including Toshiba Lighting Group in Japan and Europe
Our commitment is to deliver high-quality products with quick turnaround times to meet demanding industrial requirements.
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