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.
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.
| 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 |
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.
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