Stable and Affordable Price
The graphite material price only takes 15% of the copper electrode with the same volume. Graphite has become a popular material for EDM application. Graphite material cost is lower and more stable.
Good Machinability
Graphite has excellent mechanical machining properties. The mechanical processing speed for graphite electrode is 2-3 times than copper electrode and no burr after processing.
Low Coefficient of Thermal Expansion
The melting point of copper is 1080°C while graphite is 3650°C. CTE is 1/30 less than Copper. It is stable even under ultra high temperature. It has an obvious advantage on the platinum electrode process.
Light Weight and Low Density
The density for graphite is normally 1.7-1.9g/cm3 (4-5 times less than copper). Compared with copper electrode, graphite electrode will reduce the mechanical load during the process. It's more suitable for application for large mould.
Good Machinability
Compared with metallic materials, the bulk design of graphite is lower. It has excellent mechanical machining properties.
Good bonding effect
The broken graphite can be stuck by adhesive and it saves time and material costs.
Excellent Electrical Resistivity
Electrical Resistivity(ER) determines the material's resistance to the flow of an electrical current. With lower ER, which means better conductivity.
High Purity Molded Graphite also has other good characteristics for EDM applications such as:
Average Grain Size
Flexural Strength
Hardness
Excellent Anti-corrosion
EDM Graphite Warehouse
Unique Label for Every Piece of our Graphite
Graphite Rounds- Every Piece of our Graphite is traceable
Isostatic Graphite