Frequently Asked Questions


Q: What’s different about Micron Research EDM graphites?

A: The unique microstructure of the Micron Research family of electrode materials, and the revolutionary new manufacturing process used to achieve it make Micron Research EDM graphites the new standard for performance in EDM graphite electrode materials.


Q: What is unique about the microstructure of Micron Research EDM graphites, and how does that effect EDM performance?

A: Conventional EDM graphites have traditionally focused on smaller and more regularly shaped particles coupled with uniform porosity between the particles to determine its’ performance on the five attributes EDMers care about, Machinability, Wear Resistance, Surface Finish, Speed and Value. This conventional technology relies ONLY upon the bonds between these particles to give the material its’ strength and wear resistance. The unique microstructure of Micron Research EDM Graphite materials relies upon these particle-to-particle bonds as well, but IN ADDITION has engineered these particles into high density “bundles”. By introducing a NEW bonding dynamic into the graphite, what we call “bundle-to-bundle” bonding, Micron Research has created a new generation of graphite EDM electrode materials. By engineering this new, additional bonding structure into the graphite, the result is a stronger, faster, more wear resistant electrode material than has previously been available to EDMers.


Q: How does this new “Bundle” technology actually improve EDM performance?

A: The Micron Research “Bundle” technology impacts each of the Five Performance Factors of EDM Graphite in a different way, but there are common characteristics to each. For example, one of the key factors impacting Wear Resistance is the microstructure of the material. Simply put, wear is the breakdown of the bonds inherent in the structure of the graphite. When the bonds between the particles in a conventional graphite are broken down, that’s it, the particle is lost from the electrode and wear results. By introducing the new “bundle-to-bundle” bonding dynamic, Micron Research EDM Graphites have another line of defense, another bond which must also be broken down before wear can occur. The result is greater Wear Resistance in the EDM process.


For more information about the Five Performance Factors of EDM Graphite, and how the Micron Research “Bundle” technology provides improvements for each, please go to “Contact Us” and request our brochure, “The 5 Performance Factors of EDM Graphite”. We’ll send one to you right away!


Q: How do these new graphites machine?

A: Simply put, Micron Research EDM graphites machine great! There are three key physical properties which impact the machinability of graphite. These are strength, hardness and density. Because of the double bonding engineered into all Micron Research graphites, higher strengths and lower relative hardness have been achieved, resulting in a very machinable family of EDM electrode materials. In fact, Micron Research materials are not only easy to machine by conventional methods, but the higher density E-900, E-940 and E-970 materials also WIRE EDM exceptionally well.


Often overlooked, but very important, is the effect density has on machining. Greater density in EDM graphites generally result in finer achievable detail and smoother surface finish. When working with denser materials, like the MICRON E-970, machiners may want to consider slower feed rates upon entry and exit when milling, and higher spindle speeds are always desirable when machining graphite. It stands to reason that the more graphite there is in a given area, the more material the tool must push through or remove. Micron Research materials typically have a higher density than conventional materials in a given class, so machiners may want to consider these factors, particularly when machining our Ultra-Premium E-970 material.