SC1941 Silicon Nitride Seal Rings

Catalog No. SC1941
Color Grey
Density 3.21 g/cm3
Flexural Strength 800 MPa
Fracture toughness 6.5 MPam 1/2
Thermal stress parameters 569 K

Stanford Advanced Materials (SAM) can supply full ceramic parts made by Silicon Nitride as well as Silicon Carbide. Feel free to contact us for customized products.

Related Products: Silicon Nitride Protection Tubes for Thermocouples, Silicon Nitride Forming Rollers, Silicon Nitride Welding Pins, Silicon Nitride Bearings Rollers, Silicon Nitride, Silicon carbide.

Description of Silicon Nitride Seal Rings

Due to the even performance in high temperature, Si3N4 is a commonly used ceramic material in the metallurgical industry. It has excellent thermal shock resistance due to the microstructure. The creep and oxidation resistance of Si3N4 is also superior, its low thermal conductivity and high wear resistance also make it an outstanding material that can withstand conditions of most industrial applications.

Seal rings produced by silicon nitride provide excellent mechanism strength and durability.

There are 5 different methods to produce Silicon Nitride including SRBSN, GPSN, HPSN, HIP-SN and RBSN, make the application and working material different slightly. In these 5 methods of production, GPSN is most commonly used to produce Si3N4 components.

silicon nitride seal rings 

 

Specifications of Silicon Nitride Seal Rings

GPSN

Property   Unit
Color Grey  
Density 3.21 g/cm3
Compressive Strength 3000 MPa
Flexural Strength 800 MPa
Weibull-Modulus m 15  
Fracture Toughness KIc 6.5 MPa m^1/2
Young‘s Modulus E 320 GPa
Poisson Ratio 0.28  
Hardness Vickers (HV 1) 16 GPa
Thermal Properties
Maximum Temperature
Inert Gas 1200 °C
Air 1100 °C
Thermal Conductivity 25  
@ 20°C 28 W/mK
@ 1000 16 W/mK
Thermal Expansion
20–100°C 2 10-6/K
20–1000°C 3.5 10-6/K
Thermal Shock parameter R1 600 K
Thermal Shock parameter R2 15 W/mm
Electrical Properties
Resistivity at 20°C 10^12 Ωcm
Resistivity at 800°C 10^7 Ωcm
Dielectric constant 6 1 MHz

Applications of Silicon Nitride Seal Rings

Silicon Nitride can make products including:

-        Advanced ceramic tubes

-        Bearing rollers

-        Ceramic cutting materials

-        Cyrol bearing rollers

-        Nozzles

-        Seal rings

-        Tube forming tools

-        Mechanical engineering special applications

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