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√ low density, low weight | √ greatly electrical insulation |
√ non-wetting to non-ferrous metals | √ high hardness, high wear resistance |
√ low coefficient of thermal expansion | √ outstanding resistance to thermal shock |
√ maximum service temperature up to 1,200 °C | √ superior corrosion resistance to molten metals |

ITEM | UNIT | Silicon Nitride | GPSN |
Main Content | - | Si3N4>95% |
Color | - | Black |
Density | g/cm3 | 3.22 |
Vickers Hardness | Gpa | 15 |
Flexural Strength | Mpa | 580 |
Compressive Strength | Mpa | 2,100 |
Electrical Resistivity | Ω·cm | >1012 |
Dielectric Strength | KV/mm | 19 |
Dielectric Constant | 1 MHz | 9.6 |
Thermal Conductivity | W/m.K | 27 |
Max. Working Temperature | ℃ / °F | 1,200 / 2,200 |
Resistance to Thermal Shock | △T(℃) | 750 |
Thermal Expansion Coefficient (25 - 1,000 ℃) | 10-6/K | 3 - 4 |

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