Shaanxi KeGu New Material Technology Co., Ltd
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Product Specification
| High Light | 1625°C Operating Temperature Silicon Carbide Heating Elements ，U ， W | ||
Silicon Carbide (SiC) heating elements are premium non-metallic electric heaters engineered for extreme high-temperature industrial furnaces. Manufactured from high-grade green silicon carbide powder, these elements are formed, sintered, and recrystallized to deliver exceptional durability and thermal performance. Available in U, W, and I type configurations, they are the ideal heating solution for demanding applications requiring rapid heat-up, oxidation resistance, and long service life in aggressive atmospheres.
Extreme Temperature Capability – Operates reliably up to 1625°C (2957°F)
Superior Material Properties – Excellent oxidation resistance, corrosion resistance, and low thermal expansion
Fast Heating & Efficiency – High thermal conductivity enables rapid temperature ramp-up
Versatile Designs – Available in standard U, W, and I shapes, with custom configurations on request
Wide Industrial Application – Suitable for ceramics, metallurgy, glass, laboratories, and more
| Property | Value / Range |
| Specific Gravity | 2.6–2.8 g/cm³ |
| Bend Strength | >300 kg/cm² |
| Hardness | >9 Mohs |
| Tensile Strength | >150 kg/cm³ |
| Porosity Rate | <30% |
| Radiancy | 0.85 |
Temperature-Dependent Thermal Data:
| Temperature (°C) | Linear Expansion Coefficient (10⁻⁶/°C) | Heat Conductivity (kcal/m·hr·°C) | Specific Heat (cal/g·°C) |
| 0 | – | – | 0.148 |
| 300 | 3.8 | – | – |
| 400 | – | – | 0.255 |
| 600 | 4.3 | 14–18 | – |
| 800 | – | – | 0.294 |
| 900 | 4.5 | – | – |
| 1100 | – | 12–16 | – |
| 1200 | 4.8 | – | 0.325 |
| 1300 | – | 10–14 | – |
| 1500 | 5.2 | – | – |
Ceramics & Porcelain – Kiln firing, sintering
Glass Industry – Float glass, optical glass production
Metallurgy – Non-ferrous metal melting, powder metallurgy
Laboratory & Research – High-temperature furnaces, test equipment
Electronics & Magnets – Component annealing, processing
Brazing & Heat Treatment – Industrial heating and joining processes
To ensure optimum performance and lifespan, operate within the recommended surface load limits based on your furnace atmosphere.
| Atmosphere | Max. Furnace Temp. (°C) | Max. Surface Load (W/cm²) | Effect on Element | Recommended Protection |
| Ammonia (NH₃) | 1290 | 3.8 | Reacts with SiC to form methane, degrading SiO₂ layer | Operate at dew point |
| Carbon Dioxide (CO₂) | 1450 | 3.1 | Attacks SiC | Use quartz tube shield |
| Carbon Monoxide (CO, 18%) | 1500 | 4.0 | Minimal effect | – |
| Carbon Monoxide (CO, 20%) | 1370 | 3.8 | Carbon adsorption affects SiO₂ layer | – |
| Halogen Gases | 704 | 3.8 | Corrodes SiC and destroys SiO₂ layer | Quartz tube shield |
| Hydrocarbons | 1310 | 3.1 | Carbon pickup causes hot spots | Ensure sufficient air flow |
| Hydrogen (H₂) | 1290 | 3.1 | Reacts with SiC, damages SiO₂ layer | Operate at dew point |
| Methane (CH₄) | 1370 | 3.1 | Carbon adsorption leads to hot spots | – |
| Nitrogen (N₂) | 1370 | 3.1 | Forms silicon nitride insulating layer | – |
| Sodium (Na) Vapor | 1310 | 3.8 | Attacks SiC | Quartz tube shield |
| Sulfur Dioxide (SO₂) | 1310 | 3.8 | Attacks SiC | Quartz tube shield |
| Vacuum | 1204 | 3.8 | Stable operation | – |
| Oxygen / Air | 1310 | 3.8 | SiC oxidizes (forms protective SiO₂) | – |
| Water Vapor | 1090–1370 | 3.1–3.6 | Forms silicon hydrates, accelerates aging | – |
We supply standard silicon carbide heating elements in:
Shapes: Rods, tubes, bars, U, W, I, dumbbell, spiral
Dimensions: Diameters 0.5–3 inches (12–76 mm), lengths 1–10 feet (0.3–3 m)
Terminations: Metallized aluminum ends for reliable electrical connection
Custom designs available upon request
Additional SiC products: bricks, foam, honeycomb, powder, nanoparticles, whiskers, sputtering targets, and wool.
All heating elements are carefully packaged using professional, environmentally friendly materials to ensure safe and secure delivery. Our stringent quality control process guarantees that every product meets high performance and reliability standards.
Company Details
Business Type:
Manufacturer
Year Established:
2017
Total Annual:
800-850
Employee Number:
60~70
Ecer Certification：
Verified Supplier
Founded in 2017, Kegu is a leading advanced materials developer based in China’s Xixian New District, Qinhan New City—strategically positioned near major transport links including the Xianyang East Expressway. With a registered capital of 35.5 million RMB (approx. 5 million USD), we o... Founded in 2017, Kegu is a leading advanced materials developer based in China’s Xixian New District, Qinhan New City—strategically positioned near major transport links including the Xianyang East Expressway. With a registered capital of 35.5 million RMB (approx. 5 million USD), we o...
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