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Silicon Nitride(Si3N4

Silicon nitride (Si3N4) is a material with high fracture toughness and excellent thermal shock resistance, and in recent years it is also used as a substitute for molds.

  • Thermal Shock Resistance
  • High temperature strength
  • Wear Resistance
  • Corrosion Resistance
  • Electrical Insulating properties
  • High Fracture Toughness

Silicon Nitride(Si3N4)

Main Applications

  • Molding mold parts (hot forging molds, various molds)
  • Casting parts (low pressure castings, various metal melting furnace equipments)
  • Die casting machine parts (plungers, sleeves, goosenecks)
  • Welding machine parts (guide pin for resistance welding, guide roll for steel pipe weldings)
  • Crusher parts (classifiers, airflow type crushers, beads mills)
  • Wear resistant parts (wire drawing machine guide rollers, motor shafts, bearings, fishing line yarn paths, wire drawing capstans)
  • Semiconductor manufacturing equipment parts (stage parts, linear motors parts)


Silicon nitride (Si3N4) is a gray ceramics, it has excellent resistance to thermal shock resistance, and it has a property that it is comparatively hard to get wettability with molten metal.
By utilizing these characteristics, it is used for components used in harsh environments such as internal combustion engine parts of automobiles and torch nozzles of welding machines, especially in harsh environments.

In addition, utilizing high abrasion resistance and mechanical strength to utilize the bearing parts, shafts, bearings and even the effect of low dust generation to be used as parts of semiconductor manufacturing equipment which is required for a clean environment It is.

In addition, we have acquired trademark registration for silicon nitride SNP03 (HSTSiN®) of higher strength and higher reliability than conventional products.

Silicon Nitride

Material CodeCharacte
Flexural StrengthFracture ToughnessThermal Expansion
Thermal ConductivityVolume Resistivity
SNP02 High Thermal Shock Resistance
High Strength
3.2 290 800 6 2.0 25 >1014
SNP03 High Strength
High Reliability
3.2 300 1000 7 2.0 35 >1014

The above property values are not guaranteed values.
For the purpose of improvements, the property values are subject to change without prior notice.