While metallics such as copper were originally the material of choice in other parts of the world, graphite has been preferred as an electrode material in the U.S. market since it was first developed for EDM. Belmont's exclusive line of Ameri-Graph EDM materials is manufactured in the U.S.A. All of the materials, from our US-300 to US-950 are isostatically molded to provide you consistent results regardless of the direction of the cut.
US-300 Color Code: Yellow & White
US-300 is an isotropic graphite which excels in large cavity work. Offers large block size, excellent metal removal rate, and better wear resistance than other general purpose graphites.
Avg. Grain Size:.0006 in.
Density:1.76
Hardness:50 Shore
Flex Strength:6,000 psi
Resistivity:.0005 ohm/in.
Maximum Block Size:12" x 24" x 72"
US-500 Color Code: Brown & White
US-500 is an isotropic graphite which provides very good wear resistance and fine surface finish. US-500 is recommended for detailed mold and die work. Available in large block size.
Avg. Grain Size:.0005 in.
Density:1.78
Hardness:65 Shore
Flex Strength:6,500 psi
Resistivity:.0006 ohm/in.
Maximum Block Size:12" x 24" x 72"
US-600 Color Code: Orange & White
US-600 is an isotropic all-purpose high quality graphite which provides excellent wear resistance and surface finish. Can be easily machined into electrodes with thin cross sections and ribs. Used for fine detail mold and die work. Excellent choice for orbital EDM machines.
Avg. Grain Size:.0005 in.
Density:1.80
Hardness:66 Shore
Flex Strength:8,000 psi
Resistivity:.0006 ohm/in.
Maximum Block Size:12" x 24" x 72"
US-700 Color Code: Gold & White
US-700 is an isotropic high quality graphite. A good universal material which yields both good metal removal rates and wear characteristics, while producing an excellent surface finish.
Avg. Grain Size:.0004 in.
Density:1.82
Hardness:65 Shore
Flex Strength:8,400 psi
Resistivity:.00055 ohm/in.
Maximum Block Size:12" x 24" x 36"
US-950 Color Code: Gray & White
A micro grain, high strength, isotropic graphite which allows exceptional surface finishes associated with low electrode wear and excellent metal removal.
