Silicon Carbide Heating Element for Rapid Heating
Newthink silicon carbide heating elements are designed for ultra-fast heating with long service life and simple operating environments-. They can prevent damage to the furnace caused by excessive cold-end temperatures. Whether you’re in powder metallurgy, glass production, or other industries, Newthink provide the most suitable heating element in terms of shape and heating method tailored to your application.
Silicon Carbide Heating Element for Various Industries
Silicon carbide heating elements are available in various shapes and designs, depending on your industry and furnace characteristics.
Equal-diameter structure ensures more uniform temperature distribution across the heating zone.
Designed with a simple structure to realize easy and quick installation in different heating systems.
Three-phase power design allows for efficient energy use and higher heating performance.
Single-thread design increases surface area, promoting even heat dissipation and thermal efficiency.
Double-thread structure expands surface and contact area, enabling more complete and efficient heat transfer.
The H-shape offers enhanced mechanical strength and excellent structural stability under high temperatures.
Compact design with high power output and greater power density, ideal for space-limited systems.
Typically slotted in order to provide more balanced heat distribution across the target area.
Features and Applications of Silicon Carbide Heating Element
Silicon carbide heating elements are tubular, non-metallic high-temperature heaters made from premium green SiC, siliconized and recrystallized. With high operating temperatures, oxidation and corrosion resistance, and easy installation & maintenance, they are ideal for demanding industrial heating applications.
Maintain up to 1450℃, better than traditional 1100℃ heating wires with faster heating speed.
Simple setup and low maintenance help boost production efficiency.
Special formulations allow stable performance up to 1620℃.
High hardness and strength ensure excellent oxidation resistance and structural stability at high temperatures.
Surface oxide film and stable chemistry provide strong protection against corrosion.
Dense structure and high strength ensure shape stability under extreme heat.
Available in multiple types and designs to meet diverse heating requirements.
Durability and reliability extend usage life and reduce replacement frequency.
Why Choose Newthink Silicon Carbide Heating Element?
Escolhendo Novopensamento means choosing high-quality products and services. Newthink always consider from your perspective and fully meet your needs.
Meet small-scale or large-scale order demands and ensure steady delivery times.
For urgent orders, Newthink can deliver within 10-15 days.
For each product, Newthink will conduct strict testing before packaging and mark the resistance value.
With ISO certified, Newthink strictly control every step to ensure stable and reliable product quality.
For customers who want to test the quality, we can provide free samples for customers to test.
Each silicon carbide heating element is packaged independently. 3-5mm thick foam is used between every two products to ensure that there is no collision between products. They will be fixed with nails and packing tape.
Silicon Carbide Heating Element Production Workshop
Newthink has over 14 years of experience in advanced ceramic production. Our workshop is well organized, such as the raw material area, drying area, sintering area, splicing area, quality inspection area, packaging area, etc. Ensures high efficiency and stability of production.
We also have a special testing area. Each product is tested for its resistance value before packaging to ensure its quality and stability. Unqualified products will not be sent to customers. We can also provide clamps and coatings according to customer needs, which greatly increases the service life of the product.
Effect of Furnace Atmosphere on SiC Heating Element
Silicon carbide heating elements are more suitable for use in three atmospheres: One is a neutral atmosphere, such as an inert gas environment like nitrogen and argon; the second is a reducing atmosphere, such as hydrogen and carbon monoxide; and the third is a vacuum environment.
Some atmosphere will affect the service life of silicon carbide heaters. For example, carbon dioxide will corrode silicon carbide heating elements. The solution is to use quartz tubes for protection. Hydrocarbons are prone to electrical failures. The solution is to supply sufficient air. According to different atmospheres, solutions are different.
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Parameters of Silicon Carbide Heating Element
Silicon carbide heating elements have various molding methods, the main performance is as follows:
- Properties of Different Silicon Carbide Heating Element
- Thermal Properties by Temperature
- Common Size
| Propriedade | Unit | GD/GDH/GDU/W | LS/LD |
| True specific gravity | / | 3.2 | 3.1 |
| Apparent specific gravity | / | 2.5 | 2.8 |
| Porosity | % | 23 | 5 |
| Flexural strength | MPa at 25℃ | 50 | 98 |
| Specific heat | kJ/kg·°C at 25°C~1300℃ | 1 | 1 |
| Heat conductivity (hot side) | W/m·°C at 1000℃ | 14~19 | 16~21 |
| Specific resistance (hot side) | Ω·cm at 1000℃ | 0.08~0.1 | 0.01~0.016 |
| Coefficient of thermal expansion | 1000℃ (×10⁻⁶/℃) | 4.5 | 4.5 |
| Temperature (℃) | Linear Expansion Coefficient (10⁻⁶/℃) | Thermal Conductivity (kcal/m·h·℃) | Specific Heat (cal/g·℃) |
| 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 |
| Rod Cold End Diameter (mm) | Metal Clip Dimensions (Reference Only) / mm | |||||
| D | a | c | d | H | d | |
| 12 | 12 | 15 | 20 | 6.5 | 5 | 0.5 |
| 14 | 14 | 20 | 20 | 6.5 | 5 | 0.5 |
| 16 | 16 | 20 | 20 | 6.5 | 5 | 0.8 |
| 20 | 20 | 25 | 20 | 6.5 | 5 | 0.8 |
| 22 | 22 | 25 | 20 | 6.5 | 5 | 0.8 |
| 25 | 25 | 35 | 20 | 6.5 | 5 | 1 |
| 28 | 28 | 35 | 20 | 6.5 | 5 | 1 |
| 30 | 30 | 35 | 24 | 8.5 | 8 | 1 |
| 35 | 35 | 40 | 24 | 8.5 | 8 | 1 |
| 38 | 38 | 40 | 24 | 8.5 | 8 | 1 |
| 45 | 45 | 45 | 24 | 8.5 | 8 | 1 |
| 60 | 60 | 45 | 30 | 11 | 10 | 1 |
| Rod Cold End Diameter (mm) | SV Terminal | Aluminum Strip | ||||
| A (mm) | B (mm) | C (mm) | D (mm) | L (mm) | E (mm) | |
| 8 | 20 | 15 | 20 | 7 | 110 | 12 |
| 10 | 125 | 25 | 25 | 7 | 150 | 12 |
| 12 | 20 | 20 | 20 | 7 | 150 | 12 |
| 14 | 25 | 35 | 35 | 7 | 150 | 16 |
| 16 | 35 | 35 | 40 | 7 | 150 | 16 |
| 20 | 40 | 55 | 55 | 10 | 150 | 16 |
| 25 | 35 | 40 | 55 | 10 | 150 | 16 |
| 30 | 40 | 45 | 85 | 10 | 200 | 25 |
| 35 | 40 | 40 | 85 | 12 | 300 | 25 |
| 40 | 40 | 45 | 85 | 12 | 300 | 25 |
| 45 | 40 | 45 | 95 | 13 | 300 | 25 |
| 50 | 40 | 45 | 95 | 13 | 300 | 25 |
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Precautions for Installing Silicon Carbide Heating Element
- Before installing the silicon carbide heating element, the resistance must be checked and compared with the standard value. The maximum resistance deviation is ±0.1Ω.
- During installation, the silicon carbide heating element should be evenly distributed around the furnace and rotate freely 360 degrees.
- When using silicon carbide heating elements, a voltage-regulating transformer is required. If the voltage reaches the transformer limit and there is still a problem, the furnace can be stopped, and the rod wiring method can be changed.
- Before being put into use, no-load debugging should be carried out.
- After no-load debugging is normal, load debugging should be carried out.
- Silicon carbide heating elements should be kept away from moisture during storage.
The maximum operating temperature of silicon carbide heating elements is 1620℃, generally 1450-1480℃. Different types have different operating temperatures. We can adjust according to customer requirements.
Silicon carbide heating elements are tubular non-metallic high-temperature electric heating elements made of high-quality green silicon carbide as the main raw material, processed into semi-finished product, siliconized, and recrystallized. They are widely used in many industrial fields such as metallurgy, machinery, ceramics, glass, and electronics.
After the silicon carbide heating element is heated at high temperature, the temperature in the furnace can be increased, thereby improving the quality and production efficiency of the sintered products, and the temperature can be accurately controlled to ensure the stability of the sintered products. It is a key component in the ceramic production process.
The service life of silicon carbide heating elements depends on working conditions. Under ideal conditions, SiC elements can last over several thousand hours. Their lifespan are shortened by corrosion, higher temperatures and frequent cycling. It is best to use a moderate loading so as not to over-load. Running continuously rather than intermittently also helps prevent oxide film cracking. When the element is considered aged, it should be replaced.
Silicon carbide heating elements mainly fail due to oxidation and corrosion. During long use, a SiO2 layer forms on the surface, which thickens over time and increases resistance until the element can no longer heat efficiently. Aggressive atmospheres like alkalis, hydrogen or chlorine will accelerate this process. Mechanical stress, rapid temperature changes or improper installation can also cause cracking. Proper loading and stable operation extend their life.
Yes. Silicon carbide heating elements can replace traditional resistance wire elements, like nickel-chromium or iron-chromium-aluminum in most high-temperature furnaces. They offer clear advantages in maximum temperature (up to 1600℃), oxidation resistance, lifespan, and energy efficiency. SiC elements also have better performance in corrosive conditions, where metal degrade quickly.
For low-temperature or cost-sensitive applications, traditional resistance wires are still more economical. Choice depends on the furnace temperature, atmosphere and budget.
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