Performance Advantages
Silicon nitride ceramics represent the best comprehensive performance in structural ceramics. They are inorganic non-metallic materials resistant to extreme conditions with a melting point reaching high Celsius degrees, making them one of the best refractory materials in nature.
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High strength, high hardness, and superior wear resistance.
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Exceptional corrosion resistance and high temperature resistance up to 1200°C.
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Excellent heat dissipation and thermal shock resistance (stable under rapid temperature changes).
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Superior insulation performance and low density with good biocompatibility.
Technical Properties of Silicon Nitride (Si3N4)
| Property Item |
Unit |
Typical Values |
| Physical Properties |
| Density | g/cm³ | 3.2 |
| Mechanical Properties |
| Moh's Hardness | Grade | 9 |
| Rockwell Hardness | HRA | 90 |
| Vickers Hardness (Hv50) | HV0.5 | >1550 |
| Modulus of Elasticity | Gpa | 290 |
| Flexural Strength | Mpa | >600 |
| Compressive Strength | Mpa | 2500 |
| Fracture Toughness | Mpam1/2 | >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 | 15 |
| Volume Resistivity at 20°C | Ω.cm | 1.0X10¹² |
Why Choose Our Ceramics?
⭐ 18 years of professional industrial ceramics production experience.
⭐ Served over 5000 domestic and international companies.
⭐ Strict ISO 9001 management process for quality assurance.
⭐ High precision parts with the lowest industry tolerances.
⭐ Experienced R&D team providing efficient technical solutions.
⭐ Flexible MOQ options, welcoming small quantity orders.
Frequently Asked Questions
What is the maximum temperature Silicon Nitride can withstand?
Silicon Nitride (Si3N4) can withstand constant operating temperatures up to 1200°C and maintains high strength even at elevated temperatures.
Is Silicon Nitride resistant to chemical corrosion?
Yes, it has excellent chemical stability and can resist acid corrosion and oxidation even at very high temperatures.
How long is the typical delivery time for orders?
Generally, it is 5-10 days if the goods are in stock. For custom dimensions or large quantities not in stock, delivery typically takes 15-30 days.
Does Silicon Nitride offer good thermal shock resistance?
Absolutely. It is not afraid of rapid temperature changes, making it ideal for applications involving sudden heating or cooling cycles.
What are the primary electrical properties of this material?
It is an excellent electrical insulator with a dielectric strength of 15 KV/mm and a high volume resistivity of 1.0X10¹² Ω.cm at 20°C.
Can I request samples before placing a bulk order?
Yes, samples can be provided. While the sample itself may be free of charge depending on the specifications, the cost of freight is usually not included.
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