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| Categories | Heating Elements |
|---|---|
| Brand Name: | KEGU |
| Place of Origin: | China |
| Price: | 200-500 yuan/kg |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability: | 2,000 pcs/month |
| Packaging Details: | Strong wooden box for Global shipping |
| Model Number: | Customizable |
| Material: | SiC |
| Composition:SiC: | ＞85% |
| Color: | Black |
| Density: | 2.5~2.6g/cm³ |
| Max. Service Temp: | 1380℃ |
| Flexural Strength: | 70-90 MPa |
| Size: | Customized |
| Heat Conduction: | 23.26 W/(m·℃) |
| Resistivity: | 1000～2000 Ω·mm2/m |
| Tensile Strength: | 39.2～49 MPa |
| Max. Service Temp.: | 1500℃ |
| Linear Thermal Expansion Coefficient (20-1500℃): | 5×10⁻⁶/℃ |
| Electrical Resistivity: | 1000~2000Ω·mm²/m |
| Company Info. |
| Shaanxi KeGu New Material Technology Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Product Overview
Silicon Carbide (SiC) heating elements are premium, non-metallic electric heaters designed for extreme environments. Crafted primarily from high-purity silicon carbide, they are engineered to deliver reliable, long-lasting performance as the core heating source in high-temperature industrial furnaces and kilns, with an operating range of 600°C to 1500°C (1112°F to 2732°F).
Key Advantages of Our SiC Heating Elements
Product Types & Industrial Applications
We offer a comprehensive range of Silicon Carbide heating solutions to meet diverse thermal processing needs.
1. Standard (SW) Straight Rod Elements
Description: The most versatile and economical type, suitable for a wide range of atmospheres (air or controlled).
Max Temperature: Up to 1400°C (atmosphere-dependent).
Installation: Can be mounted vertically or horizontally.
Typical Use: General-purpose industrial furnaces, ceramics sintering, powder metallurgy.
2. U-Type Silicon Carbide Heating Elements
Description: Consists of two identical SiC rods (each with hot zone and cold ends) connected by a low-resistance SiC bridge, forming a robust “U” shape.
Advantage: Provides a compact heating zone with two parallel hot surfaces; the connector can also serve as a mounting point.
Typical Use: Compact electric furnaces, laboratory kilns, and applications requiring focused heat in a specific pattern.
3. W-Type / 3-Phase Silicon Carbide Elements
Types: SGC (Dumbbell) for vertical installation and SGD (Standard) for horizontal installation.
Description: Three high-purity SiC rods connected by a silicon carbide crossbar, designed for direct connection to a three-phase power supply with one-side terminal access.
Key Feature: Ideal for balanced, high-power heating in large industrial settings.
Typical Use: Float glass bath furnaces, large-scale heat treatment furnaces, and high-capacity kilns.
4. Spiral Silicon Carbide Heating Elements
Types: Available in Single Spiral and Double Spiral configurations.
Description: Formed from high-grade SiC powder into spiral shapes, offering a larger surface area for enhanced heat radiation.
Advantage: Excellent for uniform temperature distribution.
Typical Use: Widely used in various high-temperature kilns and furnaces for ceramics, glass, and metal processing.
Technical Data & Specifications
Property | Value | Property | Value |
Specific Gravity | 2.6 – 2.8 g/cm³ | Bend Strength | >300 kg/cm² |
Hardness (Mohs) | >9 | Tensile Strength | >150 kg/cm² |
Porosity Rate | <30% | Radiance (Emissivity) | 0.85 |
Physical Properties
Recommended Surface Load in Various Atmospheres
(Critical for element life and furnace design)
Atmosphere | Max Furnace Temp. (°C) | Surface Load (W/cm²) | Effect on SiC Element |
Oxygen / Air | 1310 | 3.8 | Forms protective SiO2 layer (normal oxidation) |
Nitrogen | 1370 | 3.1 | May form silicon nitride insulating layer |
Hydrogen | 1290 | 3.1 | Can produce methane, damaging SiO2 layer |
Water Vapor | 1090-1370 | 3.1-3.6 | May form silicon hydrates |
Carbon Monoxide | 1370 | 3.8 | Can deposit carbon, affecting performance |
Halogen Gases | 704 | 3.8 | Corrosive, destroys protective layer |
Ammonia | 1290 | 3.8 | Can produce methane, damaging SiO2 layer |
Note: Always consult our engineers for specific atmosphere and temperature applications.
Installation, Usage & Safety Guidelines
Proper handling ensures optimal performance and longevity.
Storage: Keep elements in a dry environment to prevent moisture absorption, which can affect electrical properties.
Group Matching: Before installation, group elements by resistance. Tolerance within ±10% is recommended to ensure even load distribution.
Careful Handling: SiC is hard but brittle. Avoid mechanical impact or stress during installation and maintenance.
Start-Up Procedure: Always use a gradual voltage ramp-up. Avoid immediate full power to prevent thermal shock and excessive current surge, which can crack elements.
Replacement Protocol: Replace damaged elements with new ones of similar (or slightly higher) resistance. If multiple elements fail or resistance increases significantly (>20-30%), replace the entire set for balanced operation.
Why Partner With Us?
We combine premium raw materials with stringent process control to deliver reliable, high-performance SiC heating solutions. Our technical team provides expert support for selection, custom design, and troubleshooting to maximize your furnace uptime and efficiency.
Contact us today for specifications, custom quotes, and engineering support for your U-Type, W-Type, or standard SiC heating element needs.
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