Silicon Nitride Plate & Sheet

high strength, low density, and high temperature resistance


Silicon Nitride Plate, Si3N4 Ceramic Plates

Silicon nitride plates are commonly used ceramic materials in the metallurgical industry due to their uniform performance at high temperatures. The microstructure of silicon nitride plates provides excellent resistance to thermal shock. Silicon nitride also has excellent creep and oxidation resistance, and its low thermal conductivity and high wear resistance make it an excellent material capable of withstanding the conditions of most industrial applications.

Silicon nitride ceramic is an inorganic material ceramic that does not shrink during sintering. The strength of silicon nitride, especially hot-pressed silicon nitride, is one of the hardest substances in the world. Si3N4 plate & sheet is a covalent bond compound with high strength, low density, and high-temperature resistance.


Silicon Nitride Plates Description


Density3.22 g/cm3
Flexural strength800 MPa
Fracture toughness6.5 MPa m^1/2
Thermal stress parameters569 K


Data Sheet & Typical properties of silicon nitride material:


 TypeGas pressure sintered
 Colordark grey
 Water Absorption%0
 Young ModulusGpa290
 Vickers HardnessGpa18 – 20
 Compressive StrengthMpa2200
 Flexural StrengthMpa650
 Thermal ConductivityW/m.K25
 Thermal Shock ResistanceΔ(°C)450 – 650
 Max. Working Temp.°C1200
 Volume ResistivityΩ ·cm> 10^14
 Dielectric Constant8.20
 Dielectric StrengthkV/mm16
* Tests under room temperature environment;

* The above information is offered for comparison only. Exact properties will vary depending on the manufacturing method.


Typical properties


-High strength over a wide temperature range

-High fracture toughness

-High hardness

-Outstanding wear resistance

-Low thermal expansion and high thermal conductivity

-Good thermal shock resistance

-Good resistance to chemical and oxidation


Based on the above properties, Silicon Nitride Ceramic is an ideal choice in a wide range of industries, such as:


-Bearing balls and rollers

-Bearing technology in automotive engineering

-Seal Rings

-Valves, turbocharger rotors for engines

-Turbine blades

-Diesel engine glow plugs

-Molten metal handling

-Thermocouple sheaths

-Welding jigs and fixtures

-Welding Rollers


-Centering Pins

-Drawing Tools

-Tube Forming Tools

-High-performance Cutting Tools

-Indexable Inserts

-Tubes and Pipes

-Mechanical Engineering Special Applications


Packing of Silicon Nitride Plate & Sheet


As a ceramic material, silicon nitride is quite fragile in a lot of cases. Our silicon nitride plate & sheet are carefully handled to minimize damage during storage and transportation. Suitable outer boxes and inner cushioning materials are used for Si3N4 products, vacuum packing is also engaged for some of the parts.


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