Silicon Nitride

Silicon Nitride
Silicon nitride is optimal for engine parts due to its toughness at high temperatures, superior thermal shock resistance, light weight and corrosion resistance.

Properties

Lightweight (60% Lighter than Steel)
Wear Resistant and High Fracture Toughness
Low Coefficient of Friction and Low Surface Porosity
Contact Fatigue Resistant
Electrical Insulator and High Dielectric Strength
Excellent Thermal Shock Resistance
Non Magnetic

Sintering Technology

Pressureless Sintered
Reaction Bonded
Gas Pressure Sintering
Hot Pressed Sintered*
Hot Isostatic Presing Sintering*

Related Products

Electrical Insulators
Cam Rollers and Bearings for Engines and Fuel Pumps
Cylindrical Rollers for Hybrid Roller Bearings and Fuel Pumps
Balls for Check Valves and Hybrid Ball Bearings
Seal Rings
Wear Components
Heater

Property

Value

General

Chemical Formula

Si3N4

Mechanical

Density

3.26 gm/cc

Hardness

14 GPa

Modulus of Elasticity

300 GPa

Flexural Strength

800 MPa

Compressive Strength

3000 MPa

Poisson's Ratio

0.28

Fracture Toughness

7 MPa m½

Electrical

Dielectric Strength

13 ac V/mm

Dielectric Constant

9.6 (@ 1 MHz)

Volume Resistivity

10^14 ohm-cm

Thermal

Coefficient of Thermal Expansion

3.1 x 10^-6/°C

Thermal Conductivity

17 W/(m*K)

Specific Heat

0.65 x10^3 J/(Kg*K)

Shock Resistance

800 °C Diff.

Maximum Working Temperature

1300 °C

Optical

Index of Refraction

Birefringence

Transmission Band

All properties are at room temperature unless otherwise noted.

Engineering data are representative, and are not intended as absolute nor warrantable. Manufacturer’s Data shown is blended from multiple sources and therefore illustrates the marketplace.