Key Performance Features of Silicon Carbide Crucible
- High Temperature Resistance (up to 1650℃)
- Excellent Corrosion Resistance: Performs well in strong acid and alkali environments (hydrofluoric acid ≤ 20% concentration)
- Ultra-High Purity (Metal contamination rate less than 0.01%)
- Superior Thermal Conductivity (100–120 W/m·K)
- Long Service Life (Over 300 thermal cycles under standard conditions)
Silicon Carbide Crucibles with Various Manufacturing Process
Newthink offers extensive manufacturing expertise across a range of silicon carbide crucibles, engineered to meet the demands of various industrial applications.
Thermal shock resistant and economical; suits metal melting under 1380℃.
High density and purity for semiconductors and photovoltaics industries.
Ultra-pure (＞99.9%) and stable at 1600℃ for labs and material synthesis.
Cost-effective, ≥85% purity, withstands 1400℃ in steelmaking sponge iron use.
Why Choose Newthink Silicon Carbide Crucible?
Escolhendo Novopensamento means choosing reliable quality and cost-effective solutions tailored to your actual application needs.
Over 14 years of professional experience in crucible design and manufacturing.
Competitive pricing and efficiency-focused options that help customers reduce costs.
Capable of isostatic pressing, slip casting, and mechanical forming — perfect for complex shapes and large-size crucibles.
Certificado pela ISO system with rigorous control over every production step to ensure consistent and dependable product quality.
Silicon Carbide Crucible Production Workshop
At Newthink, we conduct strict quality control from the raw materials stage, employing various advanced forming processes such as isostatic pressing, mechanical forming, and slip casting. Every SiC product goes through rigorous inspection process and quality checks before shipping, ensuring high performance and reliability.
The facility in Newthink also features a dedicated packaging area, where all products are securely packed in custom-designed crates filled with protective foam cushioning. This guarantees damage-free delivery, even under tough shipping conditions.
Popular Customized Sizes & Shapes of SiC Crucibles
Available Shapes
- Cylindrical (Round) Crucibles
- Rectangular (Square) Crucibles
- Conical Crucibles
- Custom-Shaped Crucibles
Available Sizes
- Height: up to 1400 mm
- Length & Width: up to 1200 mm
- Diameter: up to 1200 mm
Recurso
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Parameters for Different Types of Silicon Carbide Crucible
Silicon carbide crucibles are in various material grades and can be manufactured through different forming processes, each imparting unique properties tailored to specific application needs.
- Datasheet
| Item | Unit | Data | |||
| RBSiC(SiSiC) | SSiC | RSiC | OSiC | ||
| Max service temperature | ℃ | 1380 | 1650 | 1600 | 1400 |
| Densidade | g/cm3 | 3.02 | 3.08-3.16 | 2.65-2.75 | 2.75-2.85 |
| Open porosity | % | 0 | 0 | 15-18 | 7-8 |
| Thermal conductivity 1200℃ | W/m·k | 45 | 100-120 | 36.6 | / |
| Coefficient of thermal expansion | K-1x10-6 | 4.5 | 4.1 | 4.69 | / |
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Compared with alumina and graphite, silicon carbide crucibles have better thermal conductivity, stronger resistance to thermal shock, and higher corrosion resistance. These features can reduce product contamination, lower the chance of cracking, and make them last longer – all while helping save energy. SiC can stay structurally stable up to 1650°C, and its durability is often better than both graphite and alumina.
Under standard conditions, the lifespan ranges from 60 to 300 cycles, but this varies based on factors like usage frequency, exposure to corrosive environments, thermal cycling, crucible design, and mechanical damage.
– Control the speed of heating and cooling: We suggest a rate of no more than 5°C per minute.
– Clean out any leftover materials right after using it.
– Store it in a dry place to prevent it from absorbing moisture, which can make it weaker.
While the initial cost of a silicon carbide crucible may be higher than that of alumina, graphite, or clay crucibles, it has a longer service life, helps save energy, and works more efficiently. These benefits mean that over time, the overall cost is lower for long-term use.
The most common use of SiC crucibles is in non-ferrous metal melting. Compared with alumina crucibles, silicon carbide conducts heat faster and shortens melting cycles. SiC crucibles can resist the attack from molten metal and slag, ensuring cleaner melts and longer service life. SiC crucibles can also be used in furnaces. They can maintain excellent performance under rapid heating and cooling cycle.
Because of the durability and stability, SiC crucibles are widely applied in various harsh industries to meet high demands.
① Rapid heating or cooling results in uneven temperature. It will lead to internal stress and cracking. Moderate temperature changes are critical to prevent damage.
② Wrong handling and impact during the installation will cause cracks. The cracks expand under high temperature.
③ Contact with corrosive media at extreme temperatures will erode the crucible surface.
To extend service life of SiC crucibles, please inspect regularly, handle carefully and control the temperature cycling.
Yes. Newthink provides customization of size, shape and material to fit various furnaces depending on the application. For excample, reaction-bonded SiC for cost efficiency or pressureless sintered SiC for high purity and extreme temperature resistance. Contact our engineering team to get a crucible that perfectly fits your process and boosts your production efficiency.
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