Industrial Silicon Nitride Rod with High Thermal Conductivity 15 W/m.k, High Compressive Strength 488 Mpa, and High Hardness 18 Gpa for Advanced Ceramic Tubes and Bearing Rollers

Silicon Nitride Rod is a premium ceramic material widely used in the metallurgical industry, renowned for its exceptional performance in high-temperature environments. Its unique microstructure provides excellent thermal shock resistance, superior creep and oxidation resistance, low thermal conductivity, and high wear resistance, making it ideal for demanding industrial applications.

Five production methods are available: SRBSN, GPSN, HPSN, HIP-SN, and RBSN, with GPSN being the most commonly used for manufacturing Silicon Nitride components.

Originally developed for advanced gas turbines, ceramic rollers in bearings now serve critical roles in machine tool spindles, motors, generators, and various industrial applications. Hybrid rolling bearings with ceramic rollers are extensively used in challenging environments such as railways and renewable energy industries, particularly in wind turbines.

• High rigidity, strength, and hardness
• Strong corrosion resistance for use in strong acids and bases
• High temperature resistance up to 1000°C
• Non-magnetic and electrically insulating
• Low density (3.26g/cm³) - approximately 60% lighter than steel balls
• Low linear expansion coefficient (3.2 × 10⁻⁶/K)
• Self-lubricating properties for vacuum and high-temperature applications
• High mechanical strength with low thermal conductivity

• Advanced ceramic tubes
• Bearing rollers
• Ceramic cutting materials
• Cryogenic bearing rollers
• Nozzles
• Seal rings
• Tube forming tools
• Mechanical engineering special applications

Automotive Industry: Used in engine components including rocker pads, turbochargers, and waste gas control valves for improved performance and acceleration.

Bearings: Silicon nitride ball bearings offer superior impact resistance and are used in high-performance applications including NASA space shuttles, automotive bearings, wind turbines, and industrial machinery.

Metal Cutting Tools: Utilized for high-speed machining of cast iron, hard steel, and nickel-based alloys due to exceptional hardness, thermal stability, and wear resistance.

Electronics: Serves as superior insulation and chemical barrier in integrated circuits, providing excellent protection against corrosion and instability in microelectronics.