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Extruded Graphite
Long-Length Graphite Rods, Electrodes, Heater Components and Custom Machined Parts for Industrial Applications
Extruded graphite is a synthetic graphite material manufactured through a continuous extrusion process. This method is especially suitable for producing long graphite rods, electrodes and cylindrical profiles with low electrical resistivity, good mechanical strength and reliable thermal performance.
GraphiteCentral supplies extruded graphite rods, electrodes, heater components, heat shields, electronic tube anodes, melting and sintering molds, and custom machined graphite parts for vacuum furnaces, EDM, metallurgy, electronics, semiconductor processing and high-temperature industrial applications.
Why Choose Extruded Graphite?
Long-Length Manufacturing
Ideal for producing long graphite rods, electrodes and cylindrical components in consistent dimensions.
Low Electrical Resistivity
Strong electrical performance for electrodes, EDM machining and electrical graphite components.
Good Thermal Performance
Reliable thermal conductivity and stability for high-temperature furnace and metallurgical processes.
Fine Grain Options
Available in relative fine grain grades for precise machining and stable component performance.
Easy Precision Machining
Can be CNC machined into electrodes, rods, sleeves, fixtures and custom graphite parts.
Purification & Impregnation
Ash content can be reduced and material performance can be improved through further impregnation.
Extruded Graphite Rods & Electrodes
What Is Extruded Graphite?
Extruded graphite is produced by forcing a prepared carbon mixture through a die under pressure. This manufacturing method creates graphite materials with a directional structure and enables the production of long rods, cylinders and profiles that are difficult to produce economically by other forming methods.
After extrusion, the material is baked and graphitized. Additional purification, pitch impregnation, resin impregnation, SiC coating or anticorrosion treatments may be applied to improve purity, density, mechanical strength, corrosion resistance and service life.
Extruded Graphite Specifications
| Property | BEG-1 | BEG-2 | BEG-3 | BEG-4 |
|---|---|---|---|---|
| Bulk Density MIN (g/cm³) | 1.72 | 1.72 | 1.60 | 1.60 |
| Maximum Grain Size (mm) | 0.8 | 2.0 | 0.8 | 2.0 |
| Ash Content (PPM) | 3000 | 3000 | 3000 | 3000 |
| Electrical Resistivity (μΩ·m) | ≤8 | ≤8 | ≤8 | ≤8.5 |
| Flexural Strength (MPa) | 18 | 17 | 12 | 11 |
| Compressive Strength (MPa) | 45 | 44 | 32 | 30 |
Purification & Custom Properties
Ash content of all extruded graphite grades can be purified to 50 PPM. Special property requirements can be manufactured according to customer application needs. Density, mechanical strength and anticorrosion performance can be improved through further impregnation.
Available Sizes
Graphite Rods
| Specification | Diameter | Length |
|---|---|---|
| Size Range | 0-600 mm | 0-2500 mm |
| Standard Size | 50 / 75 / 100 / 200 / 300 / 400 / 500 mm | 1000 / 1800 / 2000 mm |
Custom Sizes Available
Larger sizes can be specially pressed. Smaller sizes can be further machined. Extruded graphite parts can be manufactured according to customer drawings, required tolerances and application requirements.
Common Applications
Electrodes & EDM
- Graphite electrodes
- EDM electrodes
- Precision spark erosion machining
- Custom electrical graphite parts
Vacuum Furnace Systems
- Heaters
- Heat shields
- Furnace supports
- High-temperature fixtures
Metallurgy & Industrial
- Melting molds for metals
- Sintering molds
- Electronic tube anodes
- Custom industrial graphite components
Extruded Graphite vs. Other Graphite Materials
| Material | Long Rod Production | Uniformity | Machinability | Relative Cost |
|---|---|---|---|---|
| Extruded Graphite | Excellent | Good | Excellent | Lower |
| Molded Graphite | Moderate | Good | Excellent | Medium |
| Vibration Molded Graphite | Moderate | Excellent | Excellent | Medium |
| Isostatic Graphite | Limited | Outstanding | Excellent | High |
Custom Graphite Machining
GraphiteCentral supplies both raw extruded graphite stock and fully machined graphite components manufactured to customer drawings.
- CNC turning
- CNC milling
- Drilling
- Threading
- Grooving
- Precision finishing
- Prototype and production quantities
Additional Processing Options
Purification • Pitch Impregnation • Resin Impregnation • SiC Coating • Anticorrosion Cover • Custom Machining • Special Property Manufacturing
Frequently Asked Questions
What is extruded graphite?
Extruded graphite is a synthetic graphite material made by forcing prepared carbon material through a die to produce long rods, electrodes and profiles.
What are the advantages of extruded graphite?
Extruded graphite offers long-length manufacturing capability, low electrical resistivity, good thermal performance, reliable mechanical properties and excellent machinability.
Can extruded graphite be machined?
Yes. Extruded graphite is widely used for precision CNC machining and can be manufactured into rods, electrodes, sleeves, furnace parts and custom components according to customer drawings.
What sizes are available?
Extruded graphite rods are available in diameters up to 600 mm and lengths up to 2500 mm. Standard diameters include 50, 75, 100, 200, 300, 400 and 500 mm. Custom sizes are available on request.
Can ash content be reduced?
Yes. Ash content of all extruded graphite grades can be purified to 50 PPM for applications requiring higher purity.
Looking for Extruded Graphite?
GraphiteCentral supplies extruded graphite rods, electrodes and custom machined graphite components for industrial applications worldwide.