Custom Silicon Nitride (Si3N4) Parts for High-Heat, High-Wear and Molten-Metal Duty
ADCERAX manufactures high-performance silicon nitride parts for demanding industrial use. We supply both standard and custom Si₃N₄ parts, including precision silicon nitride rods, durable silicon nitride crucibles for molten metal environments, and high-speed silicon nitride cutting tools for difficult-to-machine alloys.
With controlled materials, accurate machining and consistent quality, our parts deliver stability and long service life. Supported by factory-direct pricing, fast sampling and flexible customization, we help OEMs improve performance and reduce downtime.
🤝Send us your drawings or requirements, and our engineers will recommend the best silicon nitride solution for your application.
What is Silicon Nitride Parts?
Silicon nitride parts are engineered Si₃N₄ components designed to withstand extreme speed, temperature and mechanical stress. With high fracture toughness, low thermal expansion and exceptional wear resistance, they maintain dimensional stability where metals and oxide ceramics fail. These qualities make them essential for bearings, pumps, aluminum casting systems and other demanding industrial equipment.
Silicon Nitride Parts Properties
Silicon nitride (Si₃N₄) parts combine high fracture toughness, low thermal expansion, and exceptional resistance to heat, wear and thermal shock. Their lightweight yet strong microstructure keeps components stable under high speed, high load and extreme temperature cycling, making them ideal for demanding industrial equipment.
Silicon Nitride Parts Technical Sheet
| Si3N4 Type | Gas Pressure Sintering Si3N4 | Hot Pressing Sintering Si3N4 | High Thermal Conductivity Si3N4 |
|---|---|---|---|
| Density (g/cm³) | 3.2 | 3.3 | 3.25 |
| Flexural Strength (MPa) | 700 | 900 | 600–800 |
| Young’s Modulus (GPa) | 300 | 300 | 300–320 |
| Poisson’s Ratio | 0.25 | 0.28 | 0.25 |
| Compressive Strength (MPa) | 2500 | 3000 | 2500 |
| Hardness (GPa) | 15 | 16 | 15 |
| Fracture Toughness (MPa·m¹ᐟ²) | 5–7 | 6–8 | 6–7 |
| Maximum Working Temperature (°C) | Up to ~1200 °C in air (typical); higher-temperature duty in protective or reducing atmospheres is reviewed per application and grade — not quoted as a blanket rating | ||
| Thermal Conductivity (W/m·K) | 20 | 25 | 80–100 |
| Thermal Expansion Coefficient (/°C) | 3×10⁻⁶ | 3.1×10⁻⁶ | 3×10⁻⁶ |
| Thermal Shock Resistance (ΔT °C) | 550 | 800 | — |
Advantages of Silicon Nitride Parts
Si₃N₄ parts stay rigid and hold their shape under heavy load and long running cycles, so precision assemblies keep working accurately instead of drifting out of spec.
They take sudden heating and cooling without cracking, staying dependable in molten-metal, furnace and thermal-cycling duty where metals and oxide ceramics often fail.
High hardness and chemical inertness let Si₃N₄ parts resist abrasion, erosion and corrosion from aggressive media and molten metals, extending service life in pumps, valves and foundry systems.
Much lighter than steel, Si₃N₄ parts cut inertia and heat build-up in high-speed rotating and moving parts, helping machinery run smoother, cooler and longer.
Types of Silicon Nitride Part We Supply
ADCERAX supplies standard and custom silicon nitride (Si₃N₄) parts — rods, nozzles, ball-valve components, welding rollers, plates, hooks, ignitors, cutting tools and crucibles — made to your drawing, sample or duty. Each design is reviewed by our engineers for the right material route before production.
Si3N4 rods are used in structural supports, precision motion assemblies, furnace fixtures, and other high-temperature industrial systems.
Silicon nitride crucibles are used in molten aluminum handling, alloy melting, and high-temperature sampling.
Si3N4 cutting tools are used for high-speed machining of cast iron, nickel alloys, hardened steels and other difficult materials requiring heat resistance.
Silicon nitride ignitors are used in gas burners, industrial furnaces, heating systems and combustion units where fast ignition is required.
Silicon nitride nozzles are used in molten metal delivery, die-casting gates, abrasive flow systems and high-temperature spraying.
Silicon nitride ball valves are used in chemical pumps, corrosive fluid systems, high-temperature lines and abrasive media control where low wear,
Silicon nitride ceramic plates are used in high-temperature fixtures, furnace supports, wear panels and precision insulating components.
Silicon nitride ceramic hooks are used in high-temperature handling, furnace fixtures, material support systems and corrosive processing lines.
Silicon nitride welding rollers are used in high-temperature welding lines, metal forming systems and material guiding stations.
Not Sure Which Si₃N₄ Part Fits Your Duty? Send Us Your Drawing.
Tell us your application, drawing or old-part photo, and key duty — temperature, load, medium and quantity. Our engineers review the material route and feasibility, then recommend the right silicon nitride part for your equipment.
Silicon Nitride Parts Applications
Silicon nitride (Si₃N₄) parts serve across mechanical engineering, manufacturing and production equipment, industrial machinery and process systems, and laboratory and research equipment. Choose your area below.
Mechanical Engineering
- Typical parts: high-speed spindles, bearings, rollers, balls and precision motion parts.
- Why Si₃N₄: high rigidity, low density and strong wear resistance keep parts stable under load and speed, reducing friction and heat build-up where metal parts drift or wear.
Manufacturing & Production Equipment
- Typical parts: cutting inserts, fixtures, guide rollers, positioning pins and wear components for machining, forming and heat-treatment lines.
- Why Si₃N₄: high hot hardness and thermal-shock resistance hold accuracy through long production runs, reducing tool changes and scrap.
Industrial Machinery & Process Systems
- Typical parts: nozzles, valve components, sleeves, plungers and sealing parts for pumps, compressors and fluid-handling systems.
- Why Si₃N₄: hardness and chemical inertness resist abrasion, corrosion and thermal shock in aggressive media and high-temperature service.
Laboratory & Research Equipment
- Typical parts: crucibles, plates, rods, pins and probes for thermal analysis, alloy melting and high-temperature testing.
- Why Si₃N₄: chemical stability and low thermal expansion give clean, repeatable results under rapid heating and cooling.
Custom Si3N4 Ceramic Parts Manufacturer
ADCERAX makes custom silicon nitride (Si₃N₄) parts to your drawing, sample or duty — for aluminum foundry, thermocouple and furnace, bearing and wear, and power-module substrate applications. We support non-standard shapes, tight tolerances and special finishes, with each design reviewed for the right material route before production.
Customization Options
Si₃N₄ rods, tubes, rings, plates and custom parts in extra-large or extra-small sizes, non-standard thickness and length — confirmed per drawing.
Tighter tolerance and concentricity on specified features by grinding and lapping, defined from your drawing and critical dimensions.
Flanges, steps, threads, holes, grooves, slots and thin walls, subject to a Si₃N₄ machinability review.
Select the Si₃N₄ material route and grade (e.g. pressureless- or HIP-sintered) to match your temperature, wear and duty.
Ground, lapped or polished Si₃N₄ surfaces to a target roughness on request.
Customization Process
Send your drawing, CAD file, sample or old-part photo with material duty, dimensions, tolerances and quantity.
Our engineers review the material route and feasibility, then prototype samples for testing and validation.
Si₃N₄ forming, sintering and CNC grinding, with dimensional, material and surface-finish inspection on every batch.
Finished parts are securely packed and shipped worldwide with full documentation via your preferred carrier.
High-Performance Silicon Nitride Parts Supplier-ADCERAX
ADCERAX is a silicon nitride ceramic components manufacturer and supplier from China, offering factory-direct pricing, precise machining and fast global delivery. With advanced forming, HIP and grinding capabilities, we ensure consistent quality and reliable performance across a full range of Si₃N₄ components.
Full in-house Si₃N₄ process — forming, sintering, machining and inspection — with strict quality control from material to delivery.
Our engineers review your drawing and duty to confirm the right Si₃N₄ grade, tolerance and finish, from design to production.
From prototypes to volume — complex Si₃N₄ geometries and tight tolerances made to your drawing.
Fast quotes and quick dispatch on standard items; custom Si₃N₄ parts with lead times confirmed per project, shipped worldwide.
ADCERAX integrates Si3N4 precision parts production, precision machining, HIP sintering and quality inspection into a unified workflow. We supply both standard and custom silicon nitride parts for structural, wear-resistant, and high-temperature applications — from prototypes to mass production.
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Precision Machining & Dimensional Control
Each silicon nitride component is CNC-machined and ground to meet strict tolerances and surface standards. This ensures stable fit, smooth motion, and reliable performance in demanding mechanical assemblies. -
Batch Consistency & Quality Verification
Every batch is inspected for density, hardness and microstructure uniformity. Controlled HIP and polishing processes maintain consistent part performance and reduce failure rates across diverse applications. -
Customization & Engineering Support
We provide custom Si₃N₄ part solutions based on drawings or samples, supporting non-standard shapes, tight tolerances and special surface finishes. ADCERAX’s engineering team assists with design refinement, material selection and packaging, ensuring fast delivery and dependable global supply.
ADCERAX produces silicon nitride parts (Si₃N₄) using advanced forming, HIP sintering and precision CNC grinding. Each component is built for high strength, tight tolerances and stable performance under load, speed and temperature. We ensure consistent batch quality, smooth surfaces and long service life—making our Si₃N₄ parts reliable for structural, wear-resistant and high-temperature applications.
| Manufacturing Capabilities Overview | |||
|---|---|---|---|
| Capability Item | Typical Value / Description | ||
| Material Grades | Pressureless- or HIP-sintered Si₃N₄ with dense, uniform microstructure. Hardness ≥1500 HV, fracture toughness > 6 MPa·m¹ᐟ², and density ≈ 3.2 g/cm³ — delivering high strength, thermal stability, and wear resistance for demanding ceramic parts. | ||
| Precision Machining | CNC grinding and lapping achieve tight tolerances — typically around ±0.01 mm, with tighter tolerances (e.g. ±0.005 mm) and mirror finishes (Ra ≤0.2 μm) available on specified features per drawing and engineering review. | ||
| Forming & Shaping | Advanced isostatic pressing and pre-sinter shaping support complex geometries, holes, slots, thin walls, and non-standard features. Suitable for both standard and custom silicon nitride part configurations used across industrial applications. | ||
| Flatness & Dimensional Control | Controlled sintering minimizes porosity and warpage, maintaining consistent dimensions and roundness under mechanical or thermal stress. Ideal for precision-fit structural, sealing, and bearing interfaces. | ||
| Surface Finishing | Precision polishing and ultrasonic cleaning yield defect-free surfaces with uniform roughness and stable contact. Each Si₃N₄ part batch is inspected for density, flatness, and dimensional uniformity to ensure consistent performance. | ||
FAQs About Si₃N₄ Components
Our silicon nitride parts are made from pressureless-sintered or HIP-sintered Si3N4 with a dense microstructure, high hardness, good thermal stability and consistent mechanical properties across batches. Typical values are for material selection; exact grade data for your part is confirmed at engineering review rather than promised as a certified specification.
In many high-heat, high-wear and molten-metal positions, Si3N4 parts are lighter, harder and more thermally shock-resistant than metals, which makes them a candidate where those parts fail early. Whether it is the right swap depends on load, temperature, medium and geometry, so the old part or drawing is reviewed before a recommendation - it is not a guaranteed drop-in for every case.
Typical machined tolerances are on the order of a few hundredths of a millimetre, with tighter tolerances and fine surface finishes possible on selected dimensions depending on geometry, wall thickness and process route. The achievable tolerance for your part is confirmed from the drawing at engineering review.
Yes. We review custom Si3N4 parts from drawings, samples, old-part photos or key dimensions, and confirm feasibility, material route and finishing before quotation.
Dimensional inspection, surface-finish checks and visual/defect inspection are used, with additional checks agreed per drawing and application. Specific acceptance criteria are set at RFQ.
Silicon nitride parts are typically used up to about 1200 C in oxidizing atmospheres and up to about 1600 C in neutral atmospheres (typical, no-load reference). The safe limit for a specific part depends on grade, load, atmosphere and thermal cycling and is confirmed at engineering review.
Yes - many Si3N4 components such as riser tubes, nozzles and protection parts offer good non-wetting behaviour, thermal shock resistance and chemical stability in molten aluminium and various corrosive environments. The right grade and geometry are confirmed against your melt, temperature and mounting conditions.
Yes. Ground, lapped and polished finishes are available on selected surfaces where the application needs tight roughness or flatness; the target finish is confirmed at drawing review.
Lead time depends on shape complexity, tolerances, finishing and quantity. Standard items are faster than custom work; the actual lead time for your part is confirmed at RFQ rather than promised as a fixed figure.
Pricing depends on dimensions, tolerances, complexity and surface finishing. Simple small parts sit at the lower end while precision-machined components are higher; send your drawing for an accurate quotation rather than a fixed price.
Yes. Sample and small-batch orders are supported for evaluation and pre-production testing, which suits prototyping and qualification before scaling up.
You can source custom and standard Si3N4 parts directly from ADCERAX as a China-based manufacturer, including rods, tubes, rings, nozzles, riser tubes, rollers and custom machined components. Send a drawing or old-part photo for an engineering-reviewed RFQ.
What to Send for a Silicon Nitride Part Quote
To quote a custom Si₃N₄ part, send what you have:
- Part type / application: foundry riser-dosing-protection / thermocouple-furnace / bearing-wear / valve-nozzle / substrate context
- Material route if known: GPSN / HPSN / HIP-SN
- OD, ID, length and thickness
- Critical tolerance, flatness, concentricity, Ra (if critical)
- Roundness / concentricity (if critical)
- Chamfer, groove, holes or mounting features
- Operating temperature and atmosphere
- Media or corrosion (acids, alkalis, molten metal, gases)
- Load, speed or wear medium (rotating / wear parts)
- Drawing, sketch or photo of the old part
- Old-part material and failure mode (for replacement)
- Quantity and target lead time
Silicon nitride (Si₃N₄) parts serve across mechanical engineering, manufacturing and production equipment, industrial machinery and process systems, and laboratory and research equipment. Choose your area below.
*Our team will answer your inquiries within 24 hours.
*Your information will be kept strictly confidential.
info@adcerax.com
Tel:+86-0731-84428843
WhatsApp:+86 19311583352
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