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Silicon Nitride Rods

Silicon nitride rod is a commonly used ceramic material in the metallurgical industry due to the even performance at high temperatures. Silicon nitride rod has excellent thermal shock resistance due to the microstructure. The creep and oxidation resistance of Si3N4 is also superior, its low thermal conductivity and high wear resistance also make it an outstanding material that can withstand conditions of most industrial applications.

There are 5 different methods to produce silicon nitride rod, including SRBSN, GPSN, HPSN, HIP-SN and RBSN, make the application and working material different slightly.

Product Features:

High wear resistance, acid and alkali resistance, high strength and good toughness.
No pollution, super hardness. high temperature resistance, fire resistance, corrosion resistance, never rust, oxidation resistance, insulation, lubrication.

Product Parameters:

Properties Units Value
Density, r g/cm3 3.31
Color dark gray
Water Absorption % @R.T. 0.0
Hardness Moh’s 9
Hardness knoop (kg/mm2) 2200
Compressive Strength MPa @ R.T. 689-2760
Tensile Strength MPa @ R.T. 360-434
Modulus of Elasticity
(Young’s Mod.)
GPa 317
Flexural Strength (MOR) MPa @ R.T. 679-896
Fracture Toughness, KIc MPa x m1/2 5.0-8.0
Max. Use Temperature
(* denotes inert atm.)
ºC 1500
Thermal Shock Resistance DT (ºC) 750
Thermal Conductivity W/m-K @ R.T. 27
Coefficient of Linear Thermal Expansion, al mm/m-ºC (~25ºC through ±1000ºC) 3.4
Specific Heat, cp cal/g-ºC @ R.T. 0.17
Dielectric Constant 1MHz @ R.T. 7.0
Dielectric Strength kV/mm 17.7
Electrical Resistivity Wcm @ R.T. 1013

Application and After-Sales Service:

It is mainly used in the production of aluminum, copper and zinc, as the lining material of the molten pool and electrolytic bath, reduction bath.

Our silicon nitride rods are exported to USA, Canada, Europe, and South America and Southeast Asia.

After-sales service:

Accept any repair of the product, help to improve technology for customer. And also provide long-term technical help and support for you.

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