Silicon Nitride Rod/Bar
- Custom and standard options available.
- Fast lead times guaranteed.
- High performance at a competitive price.
Silicon nitride rods/bars offer >800 MPa strength, 1500+ HV hardness, and stability up to 1300°C. With low thermal expansion, corrosion resistance against molten metals, and electrical insulation, they are precision-manufactured for high-temperature furnace supports, semiconductor components, mechanical seals, and demanding industrial applications.NexusX Advanced Materials, as a premier manufacturer and supplier of high-quality Silicon Nitride Rod/Bar products, focuses on producing high-precision aluminum nitride silicon structural compenents through advanced technologies for diverse application fields.
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Silicon Nitride Rod/Bar Data Sheet
| Purity: | ≥99% |
| Color: | Black |
| Chemical Formula: | Si3N4 |
| Material Grades: | HMSN1000, HMSN2000, HMSN3000, HMSN4000 |
| Density: | 3.20 g/cm3 |
| Diameter: | Φ5×50mm, Φ15×80mm, Φ30×120mm, Φ50×150mm, or customized |
Silicon Nitride Rod/Bar Description
Our silicon nitride rods/bars are precision-engineered using premium raw materials and specialized sintering technology, offering exceptional structural integrity and dimensional stability. With axial compressive strength exceeding 2000MPa and radial flexural strength over 600MPa, the material maintains more than 85% strength retention at 1200°C. Featuring stable thermal expansion coefficient of 3.0×10⁻⁶/K and thermal conductivity of 20-25W/(m·K), these components withstand thermal shocks under 800°C temperature differentials. The material density is maintained at 3.2±0.1g/cm³, with ultrasonic testing ensuring defect-free internal structure. Special surface-treated versions with coatings are available for enhanced performance in specific environments. Packaged in shock-absorbing, moisture-resistant materials, each rod includes complete material certification and inspection reports. Widely used in high-temperature kiln structures, semiconductor equipment support rods, chemical mechanical seal shafts, and precision measurement instrument components, they are particularly suitable for engineering applications requiring simultaneous high strength, temperature resistance, and corrosion protection.
Silicon Nitride Rod/Bar Specifications
| Material | Si3N4 |
| Size | Φ5×50mm Φ15×80mm Φ30×120mm Φ50×150mm Or customized according to specific requirements. |
| Surface roughness | Ra 0.025μm (mirror-like glossy surface) Ra 0.006μm (mirror surface) Or customized |
| Tolerance | The best can be achieved at 0.001mm. |
| Secondary processing | Grinding, Fine grinding, Precision cutting, Drilling, etc. |
Silicon Nitride Rod/Bar Features
- High-Strength Structure: Axial compressive strength >2000MPa with balanced hardness and toughness
- Excellent Thermal Resistance: Continuous service at 1200°C with outstanding thermal shock resistance
- Precision Dimensional Control: Diameter tolerance ±0.02mm, straightness <0.01mm/100mm
- Stable Chemical Properties: Resistant to molten metal corrosion with superior oxidation resistance
- Superior Insulation: Maintains high volume resistivity (>10¹⁴Ω·cm) at elevated temperatures
- Lightweight & Rigid: Density 3.2g/cm³ with elastic modulus exceeding 300GPa
Silicon Nitride Rod/Bar Applications
- High-Temperature Industry – Kiln support rods, heat treatment equipment rails
- Semiconductor Manufacturing – Diffusion furnace carriers, wafer handling shafts
- Mechanical Engineering – Precision bearing rollers, mechanical seal shafts
- New Energy Sector – Fuel cell connecting rods, electrolyzer electrodes
- Special Equipment – High-temperature measurement probes, vacuum system components
- Research Instruments – Synchrotron beamline tubes, experimental setup frames
Silicon Nitride Ceramic Packaging
Silicon nitride ceramic products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.
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- SAFETY DATA SHEET (SDS) -Silicon Nitride Rod/Bar
FAQ
What are the main advantages of silicon nitride rods/bars?
They offer high strength, excellent hardness, superior high-temperature resistance, outstanding thermal shock resistance, corrosion resistance, and excellent electrical insulation, making them ideal for extreme operating conditions.
What is their maximum operating temperature?
They can be used continuously at up to 1200°C in oxidizing atmospheres, with higher short-term tolerance (over 1300°C) possible in inert or reducing environments.
Can they be machined into complex shapes?
While precision grinding is possible, machining complex shapes is difficult and costly. Simple cylindrical or prismatic designs are recommended for optimal performance and cost-effectiveness.
How do they compare to metal rods?
They are lighter (density ~3.2g/cm³), more stable at high temperatures, offer better wear resistance and electrical insulation, and do not rust or degrade through oxidation.
Can they be joined or assembled?
Yes, using specialized ceramic adhesives, metallized brazing, or mechanical clamping methods, depending on the mechanical loads and temperature conditions.
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