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Silicon Nitride

SINTRON Silicon Nitride (Si3N4) is a material designed for exceptional wear, molten metal, and corrosion resistance at a reasonable price. It can be formed into a variety of relatively complex shapes with good tolerance control, without incurring traditional hard tooling setup charges. It also exhibits exceptional oxidation and thermal shock resistance.

 

ADVANTAGES OF SINTRON
  • High strength over a wide temperature range
  • Thermally conductive
  • High fracture toughness/hardness
  • Good chemical resistance
  • Nonwetting to molten nonferrous alloys

Key Material Properties

MechanicalSI/MetricImperial
Density3.29 gm/cc205.4 lb/ft2
Porosity0%0%
ColorBlack-
Flexural Strength830 MPa120.4 lb/in2x103
Elastic Modulus310 MPa45 lb/in2x106
Poisson’s Ratio0.270.27
Hardness1580 Kg/mm2-
Fracture Toughness KIC6.1 MPa•m1/2-
Maximum Use Temperature (no load)1000 °C1830°F
Thermal Conductivity30 W/m•°K208 BTU•in/ft2•hr•°F
Coefficient of Thermal Expansion3.3x10-6/°C1.8x10-6/°C

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