PRODUCT SPECIFICATIONS AND DETAILS
Graphite Block
Graphite Block is a solid synthetic graphite material supplied in block form for machining, high-temperature processing, EDM electrodes, metallurgical tooling, furnace components, and semiconductor-related parts. Depending on the grade and forming route, this product may also be referred to as carbon graphite block, synthetic graphite block, isostatic graphite block, fine grain graphite block, high purity graphite block, or EDM graphite block. At QDZRT Graphite, Graphite Block is available in multiple material systems including molded graphite, extruded graphite, and fine grain isotropic graphite for customers looking for both standard blocks and custom-machined graphite parts.
Compared with graphite sheet, graphite paper, or graphite powder, Graphite Block is a more structural graphite product designed for shaping, machining, load-bearing support, and demanding thermal or chemically aggressive environments. It is widely used in EDM electrode fabrication, furnace fixtures, molds, crucibles, semiconductor components, hot-zone parts, metallurgical tooling, and custom graphite machining projects.
Material Routes and Application Logic
| Material Route | Typical Characteristics | Typical Use |
|---|---|---|
| Isostatic / Isotropic Graphite | Fine grain, uniform structure, higher density, better dimensional consistency, easy machining | EDM, semiconductor, precision molds, high-end furnace parts |
| Molded Graphite | Good balance of machinability and cost, suitable for larger block formats | General industrial graphite blocks, metallurgy, fixtures, custom parts |
| Extruded Graphite | Coarser grain, cost-effective, often higher thermal and electrical conductivity | General furnace use, larger graphite sections, selected metallurgical applications |
Recommended Grade Matrix
The following specification matrix is designed for product page presentation and inquiry guidance. Different grades can be selected according to density, purity, grain size, electrical resistivity, machining requirements, and end-use environment.
| Grade Direction | Typical Applications | Recommended Specification Range |
|---|---|---|
| General Grade (EDM / Metallurgy) | EDM electrodes, molds, metallurgy tooling, furnace fixtures, general graphite machining | Density: 1.70–1.80 g/cm³ Electrical Resistivity: 10–15 μΩ·m Ash: ≤0.30% Typical Grain Size: 5–20 μm Material Route: Molded / Extruded / Isostatic |
| High Purity Grade (Semiconductor / High Temperature) |
Semiconductor graphite parts, hot-zone parts, high temperature furnace components, contamination-sensitive uses | Density: 1.75–1.85 g/cm³ Carbon: ≥99.9% Ash: ≤0.05% Typical Grain Size: 1–10 μm Electrical Resistivity: 14–20 μΩ·m Optional Purified Grade: Available upon request |
| Fine Grain Isotropic Graphite | Precision EDM, detailed molds, semiconductor fixtures, custom machined graphite parts | Particle Size: 1–10 μm Density: 1.78–1.90 g/cm³ Electrical Resistivity: 12–19.5 μΩ·m Structure: Isotropic, Uniform Particles Feature: Good machinability, consistent behavior, better dimensional precision |
Technical Parameter Summary
| Item | Typical Product Direction |
|---|---|
| Product Name | Graphite Block |
| Alternative Names | Carbon Graphite Block / Synthetic Graphite Block / Isostatic Graphite Block / Fine Grain Graphite Block / High Purity Graphite Block / EDM Graphite Block |
| Appearance | Black to Dark Gray Solid Graphite Block |
| Form | Block / Plate / Slab / Machined Block / Custom Graphite Part |
| Material Type | Molded Graphite / Extruded Graphite / Isostatic Graphite / Fine Grain Isotropic Graphite |
| Density | 1.70–1.90 g/cm³ depending on grade |
| Carbon Content | Up to ≥99.9% for selected high purity grades |
| Ash Content | ≤0.30% general grades / ≤0.05% high purity grades |
| Particle Size | 1–20 μm depending on grade and application direction |
| Electrical Resistivity | 10–20 μΩ·m depending on grade |
| Machinability | Good to Excellent, especially in fine grain isotropic grades |
| Application Grade | EDM Grade / Metallurgical Grade / Furnace Grade / Semiconductor Grade / Custom Machining Grade |
| Processing Method | Sawing, Milling, Turning, Drilling, CNC Machining |
| Supply Format | Raw Block / Cut Block / Semi-Finished Blank / Fully Machined Part |
Key Features
- Solid graphite material suitable for machining and structural applications
- Excellent resistance to high temperatures and thermal shock
- Good electrical conductivity and thermal conductivity
- Good chemical resistance in many industrial environments
- Available in molded, extruded, isostatic, and fine grain isotropic grades
- Suitable for EDM, furnace, mold, semiconductor, and metallurgical applications
- Can be machined into customized graphite parts according to drawings
- Available in different densities, purities, grain sizes, and block dimensions
Main Application Directions
- EDM graphite block for mold and die electrode production
- High purity graphite block for semiconductor and high temperature processing systems
- Fine grain graphite block for precision machining and detailed mold structures
- Synthetic graphite block for furnace fixtures, trays, hot-zone parts, and thermal process tooling
- Carbon graphite block for metallurgy, casting, and industrial graphite component manufacturing
- Custom machined graphite block for rings, plates, molds, boats, trays, and engineered graphite parts
Why Choose Graphite Block for Industrial Use
Graphite Block is preferred in many industrial sectors because it offers a practical balance of machinability, thermal resistance, chemical stability, and structural integrity. Compared with graphite powder or flexible graphite materials, it is more suitable for applications requiring fixed geometry, load-bearing support, or precision machining. This makes it a reliable material for both standard industrial components and custom-designed graphite parts.
Depending on the selected grade, Graphite Block can support a wide range of performance targets, from cost-effective general industrial use to high-purity and fine-grain applications. Buyers can choose different density, purity, and grain size combinations according to service conditions, contamination limits, dimensional tolerance, and expected machining detail.
Product Advantages
- Multiple graphite material routes for different price and performance requirements
- Available in general industrial, high purity, and fine grain isotropic grades
- Suitable for both standard block supply and drawing-based graphite machining
- Good balance of heat resistance, conductivity, and machinability
- Suitable for sampling, pilot testing, and bulk industrial supply
- Supports inquiry matching by application, material grade, block size, and machining requirement
Customization Service
QDZRT Graphite can provide suitable Graphite Block specifications according to different application requirements, including material grade, density, purity, grain size, block size, machining allowance, and finished-part format. Sample support, pilot testing, drawing-based machining, and bulk order services are available for industrial users, OEM customers, and graphite component manufacturers.
Customized supply options may include raw block cutting, semi-finished blanks, CNC machining, drilled or slotted structures, precision plates, rings, trays, furnace fixtures, and other engineered graphite parts. For customers searching for a graphite block supplier, synthetic graphite block manufacturer, EDM graphite block source, or high purity graphite block solution, QDZRT Graphite can support both standard and custom projects.
Packaging & Storage
Graphite Block is available in standard packaging and customized packaging options, including raw block packaging, semi-finished packaging, machined-part packaging, sample supply, and bulk industrial packaging. It should be stored in a clean, dry, and well-protected environment to avoid contamination, impact damage, and moisture exposure. Proper handling and storage help maintain dimensional integrity and surface quality during transportation and long-term storage.
Inquiry Guidance
To help QDZRT Graphite recommend the right Graphite Block grade, buyers are encouraged to provide application type, preferred material route, target density or purity level, approximate dimensions, machining allowance, and whether the final product will be used for EDM, furnace, metallurgy, semiconductor, or custom graphite components. This allows faster matching between standard graphite block supply and engineered graphite part production.
