Graphite Crucible Manufacturer
Graphite crucibles are high-temperature containers designed for metal melting, laboratory testing, and industrial processing. Made from high-purity graphite materials, they provide excellent thermal stability, corrosion resistance, and heat conductivity for applications in metallurgy, laboratories, and advanced material processing.
Technical Specifications
|
Item |
Specification |
|
Material |
High Purity Graphite |
|
Carbon Content |
≥99.98% |
|
Ash Content |
≤0.2% |
|
Bulk Density |
1.85–1.88 g/cm³ |
|
Flexural Strength |
35–65 MPa |
|
Compressive Strength |
70–120 MPa |
|
Grain Size |
Fine grain (0.8 mm) / Medium grain (2 mm) / Isostatic ultra-fine (0.02 mm) |
|
Operating Temperature |
Up to 400°C in air without anti-oxidation coating; 1400°C–1600°C with anti-oxidation protection; up to 2800°C in vacuum or inert atmosphere |
|
Machining Tolerance |
Up to ±0.05 mm (custom machining available) |
Excellent Thermal Stability: Maintains structural stability under high-temperature conditions, making it suitable for demanding melting and furnace applications.
High Corrosion & Thermal Shock Resistance: Resists molten metals, chemical environments, and rapid temperature changes to reduce cracking during repeated heating cycles.
High Purity Performance: Low ash content (≤0.2%) helps minimize contamination during precious metal melting and high-purity material processing.
Precision Machining Capability: Advanced CNC machining supports customized crucible dimensions and complex structures with tight tolerances.
Laboratory Crucible
Designed for laboratory testing, material analysis, and small-scale high-temperature experiments requiring stable thermal performance and low contamination.
Graphite Crucible for Smelting
Used for industrial metal melting applications, including precious metals and non-ferrous alloys, with excellent thermal conductivity and corrosion resistance.
Graphite Double Ring Crucible
Designed for specific furnace structures where dimensional accuracy, thermal stability, and reliable service life are required.
Graphite Crucible Types
We provide different graphite crucible options according to application requirements:
|
Type |
Application |
|
Pure Graphite Crucible |
High-purity melting and electric furnace applications |
|
Clay Graphite Crucible |
General metal melting applications |
|
Silicon Carbide Graphite Crucible |
High-temperature melting with improved oxidation resistance |
|
Isostatic Graphite Crucible |
Applications requiring higher density and longer service life |
Application Areas
Precious Metal Smelting: High-purity graphite crucibles with low ash content (≤0.2%) help reduce contamination risks during gold, silver, and other precious metal refining processes.
Copper & Aluminum Alloy Casting: Excellent thermal shock resistance helps reduce cracking during repeated heating and cooling cycles in copper and aluminum alloy casting.
Semiconductor & Photovoltaic Processing: High-purity graphite materials are suitable for crystal growth equipment, vacuum furnaces, and high-temperature processing environments requiring stable performance.
Laboratory & Advanced Material Processing: Used for thermal experiments, chemical processing, and high-temperature material research.
Quality Control & Certifications
We maintain strict quality control from raw materials to finished products:
- Batch inspection of graphite raw materials
- Density and performance verification
- Dimensional inspection after machining
- Final inspection before shipment
Quality documents and certifications available:
- ISO 9001 Quality Management System Certification
- Material Certificate of Analysis (CoA)
- Dimensional Inspection Report
Why Choose Us
Decades of Graphite Manufacturing Experience
With nearly 40 years of experience in graphite machining, we provide precision graphite components for semiconductor, vacuum furnace, photovoltaic, metallurgy, EDM, and new energy applications.
Advanced CNC Machining Capability
Equipped with 50+ machining machines and CNC processing equipment, we support customized graphite parts with machining sizes up to 1000 mm.
Reliable Material Selection
We process high-quality graphite materials, including isostatic graphite and molded graphite, selected according to temperature, density, and application requirements.
Customization & Service
We provide customized graphite solutions based on customer drawings, technical specifications, and application requirements.
Customization options include
- Different crucible sizes and shapes
- Furnace compatibility requirements
- Specific graphite grades
- Special operating environments
Our services include
- Custom sample production
- Technical consultation
- Material selection assistance
- OEM manufacturing
Packaging & Logistics
- Export-standard protective packaging available
- Packaging methods selected according to product size and transportation requirements
- Air and sea shipping options available
- MOQ: 1 piece for sample orders; bulk orders are negotiable according to product specifications.
- Sample lead time: 5–7 business days depending on product complexity.
- Bulk production lead time depends on order quantity and product complexity
As one of the most professional graphite crucible manufacturers and suppliers in China, we have world-leading production equipment and strong manufacturing capabilities. Please rest assured to buy durable graphite crucible for sale here from our factory. Quality products and reasonable price are available.