Graphite Brick Isostatic
Graphite Brick Isostatic are composed of fine-grain, high-purity GRAPHITE (C), typically processed from petroleum coke or similar raw materials. The defining characteristic is the Isostatic Pressing method used to form the green body.
| CATEGORY | MANUFACTURING METHOD | KEY FEATURE | PRIMARY ADVANTAGE |
| ISOSTATIC GRAPHITE | Isostatic Pressing | Fine grain, isotropic structure | High strength and precision, uniform conductivity |
| EXTRUDED GRAPHITE | Extrusion | Coarser grain, anisotropic structure | High conductivity along the axis (but weaker across) |
Key Properties and Performance
| PROPERTY | TYPICAL PERFORMANCE | MECHANISM OF ADVANTAGE |
| Isotropy | EXCELLENT (Uniform in all directions) | Uniform pressure during forming eliminates directionality, ensuring predictable structural and thermal behavior. |
| Density/Porosity | HIGH DENSITY, VERY LOW POROSITY | Fine grain and high forming pressure result in a material that is highly impermeable to liquids and gases. |
| Cold Crushing Strength (CCS) | VERY HIGH | The fine, densely packed grain structure provides exceptional mechanical strength. |
| Thermal Shock Resistance | EXCELLENT | High strength and uniform thermal expansion minimize stress concentrations. |
Graphite Brick Isostatic
Advantages and Key Characteristics
Isostatic Graphite is a premium material chosen when reliability, precision, and uniformity are more critical than any other factor.
- Isotropic Properties: Unlike extruded or vibration-molded graphite, Isostatic Graphite exhibits the same strength, thermal expansion, and electrical/thermal conductivity in the axial, radial, and tangential directions. This is vital for complex shapes and high-tolerance applications.
- High Purity and Fine Grain: The fine grain size and low ash content lead to a high-purity product that minimizes contamination, crucial for electronics and nuclear applications.
- Superior Mechanical Strength: The uniform, high-pressure compaction results in a material with excellent CCS and superior resistance to wear and abrasion, allowing for precision machining.
- Low Permeability: The low and uniform porosity makes the brick highly resistant to the infiltration of corrosive liquids and gases, even without subsequent impregnation.
Typical Industries and Applications
This brick is used in advanced, high-precision, and high-purity thermal processes:
- Nuclear Industry: Reactor components and shielding due to high purity and isotropic properties.
- Semiconductor/Electronics: Crucibles, molds, and heating elements for crystal growth and high-purity material processing.
- Continuous Casting: Molds, dies, and liners for casting non-ferrous metals where low thermal expansion and a non-stick surface are required.
- Specialty Chemicals: Linings for reaction vessels requiring extremely high chemical and thermal stability.
Furnace Areas and Service Zones
They are specified for critical components where dimensional tolerance and purity are non-negotiable:
- MOLDS AND DIES: Used for precision casting and forming of specialized alloys.
- CRUCIBLES: Used for melting high-purity metals and crystals.
- FURNACE INTERNAL COMPONENTS: Used as heating elements or support structures where uniform thermal loading is necessary.
Key Data Sheet Properties to Consider
Selection is focused on isotropy and mechanical integrity:
- Coefficient of Thermal Expansion (CTE): CRITICAL VALUE. Must be reported as isotropic (the same in all directions) and low, indicating uniform structural stability.
- Flexural Strength: Often a key indicator for high-precision molds and components, demonstrating the material’s resilience.
- Bulk Density (BD): Must be high (e.g., > 1.7g/cm3) reflecting the tight grain packing.
- Grain Size: Should be reported as fine (e.g., < 20 microns) indicating suitability for precision machining and high purity.
Technical Guidance: Isostatic Graphite is the material of choice when a component requires extensive, precision machining or when directional thermal stress is a concern. While it is more expensive than other graphite types, the cost is justified by the reduced failure rate and enhanced performance in high-value processes.
✨ Customization Services
We offer product customization services, allowing you to tailor the appearance, dimensions, or specific markings of items like refractory shapes or bricks. This includes options for incorporating specific geometric requirements to ensure seamless integration into your process systems.
🔬 Sampling for Testing & Validation
Free product samples are available for thorough testing and validation. This allows you to confirm the quality, compatibility, and performance of our materials—such as specific bricks, castables, or raw materials—before committing to a full order.
💡 Expertise in Refractory Solutions
Leverage our deep expertise to receive detailed, application-specific refractory solutions. We move beyond just selling products by providing comprehensive plans that encompass material selection, installation guidance, and performance optimization to maximize the lifespan and efficiency of your high-temperature processes.
Rabatec products are exclusively manufactured in facilities that have achieved rigorous ISO certifications across Quality (ISO 9001), Environmental Management, and Occupational Health & Safety. This commitment ensures every product, from refractory bricks to specialized equipment, meets the highest global benchmarks for performance, sustainability, and workplace safety.
📦 Logistics Excellence: Shipping, Packaging, and Marking
Minimizing Risk: We manage all logistics to minimize handling touchpoints and transit shock. Our carriers are pre-vetted for their experience in transporting heavy, fragile, and sensitive industrial materials.
Traceability: Every shipment includes comprehensive documentation and tracking information, providing end-to-end visibility and ensuring precise delivery coordination for your site.
Protection is Paramount: Our packaging strictly follows industry standards to prevent damage, corner chipping, and moisture absorption—especially critical for materials like Basic Refractory Bricks and Refractory Mortars & Mixes.
Robust Palletization: Products are secured on fumigated, high-strength export pallets (e.g., 1100x950mm or similar sturdy dimensions) using heavy-duty strapping and durable protective wrapping (polyethylene sheeting, cardboard, etc.) to withstand long-distance travel and multiple loadings.
Moisture Control: Sensitive materials are protected with appropriate sealing and, where necessary, desiccants or moisture-vapor proof enclosures to maintain the product's integrity until installation.
Clear Identification: All outer packaging is clearly marked on multiple sides with large, legible text for immediate identification and safe handling.
Full Traceability: Markings include all essential data points: Product Name, Quality Grade, Batch Number, Quantity, Net/Gross Weight, Order Number, and the Final Destination/Construction Area. This ensures every pallet can be accounted for and correctly staged upon arrival.
Safety & Compliance: We adhere to all regulatory requirements for marking, labeling, and placarding—especially for any items classified as Dangerous Goods—to ensure full compliance with international and domestic transport regulations.
❓ Frequently Asked Questions (FAQ)
Question | Elaborated Answer |
Q: What is the Refractoriness Under Load (RUL) of your refractories? | A: Refractoriness Under Load (RUL) is a critical property that defines the maximum temperature our materials can withstand while under compressive stress before deforming (softening). Since we offer a wide range of materials—from Alumina-Silicate Bricks to high-performance Silicon Carbide Bricks—the RUL varies significantly. For specific product data, please refer to the product data sheet or submit a quote request for the material you are interested in. |
Q: Where are the Rabatec refractories and materials produced? | A: Our products are primarily sourced from specialized manufacturing plants in China. Crucially, these facilities have all undergone rigorous audits and achieved comprehensive ISO certifications (Quality, Environment, and Safety), ensuring that production adheres to the highest global standards for consistency and performance. |
Q: What refractory materials does the company offer? | A: We supply a comprehensive portfolio of advanced refractory solutions, including: Shaped Products: Alumina & Silica Bricks, Basic & Specialized Bricks (e.g., Magnesia), SiC & Structural Ceramics, and Precast Shapes. Monolithic Products: Refractory Castables, Mixes & Mortars. Insulation: Insulation Fibre and High-Performance Insulation Products. |
Q: How should I choose the appropriate refractory material for my application? | A: Selecting the correct refractory is paramount to process efficiency. The choice depends on three key factors: 1. Operating Environment: Maximum process temperature and thermal cycling (shock). 2. Chemical Attack: Type of slag, molten metal, or corrosive gas being handled (acidic, neutral, or basic). 3. Mechanical Stress: Abrasion, erosion, and static load requirements. We recommend utilizing our detailed refractory solutions service to consult with our engineers for an optimized, application-specific recommendation. |
Q: Which monolithic material should I choose when patching an existing lining? | A: For patching and minor repairs, the ideal monolithic material depends on the parent lining material, the patching depth, and the need for a rapid return to service. Common choices include: Refractory Mortars & Mixes (for minor joints/surfaces) or Plastic Refractories (for areas requiring physical compaction). Always choose a patch material chemically compatible with the existing lining to ensure proper bonding and service life. |
Q: Can I receive product samples before placing a major order? | A: Yes. We gladly provide product samples for your internal testing and validation purposes. This ensures you can confirm the quality, composition, and fit of the material—such as our Refractory Castables or Alumina-Silicate Bricks—in your specific operational environment before committing to a bulk purchase. |
Q: Do you provide certifications to verify material quality? | A: Absolutely. We provide product-related inspection certificates and quality assurance documentation upon request. This verifies that your order has passed all internal quality control checks and meets the required material specifications and industry standards. |
Q: What measures are taken for product protection during transport? | A: We ensure quick, reliable transport by using robust, industrial packaging that strictly follows industry standards. This includes high-strength palletization, heavy-duty strapping, and weather-resistant wrapping to protect fragile items like bricks and mixes from corner chipping, mechanical damage, and moisture during transit. |
