YOUR EDM GRAPHITE SOURCE
EVERYTHING FOR EDM
For over six decades, Belmont has delivered our customers “everything for EDM”. This focus includes our extensive line of EDM graphite to meet the requirements of a wide range of applications. EDM graphite is available in diameters, plates, tubing, squares, saw-cuts, tapping electrodes, grinding wheels, pre-ground blanks, and tooling ready blanks. Fabricated electrodes are also available per your print specifications.
Belmont is the oldest existing distributor of Entegris | Poco Materials and is very proud of our long-standing partnership. Together our EDM knowledge and material selection is second to none in the industry. Entegris | Poco Materials premier EDM electrode material offers the best balance of metal remove rates, consistent performance, and low electrode wear. Entegris | POCO Materials is a leader in educating the EDM user on material selection and machine parameters. Years of testing and research have resulted in the most comprehensive EDM technical manual available today. Please contact us for your technical manual today or to learn more about EDM graphite.
| Graphite Grade | Target Application |
|---|---|
| EDM-AF5 | Fine detailed electrodes for engraving |
| EDM-C3 | Fine detailed electrodes where strength is critical |
| EDM-4 | Fine detailed electrodes requiring excellent surface finishes |
| EDM-3 | Fine detailed electrodes for plastic injection molds and aerospace |
| EDM-2 | Fine detailed electrodes for blind cavity and difficult flushing |
| EDM-1 | Fine detail roughing with low wear |
| EDM-200 | Medium detail and structural ribs |
| EDM-C200 | Medium detail requiring strength and finer surface finish |
| Poco EDM Graphite | ||||||||
|---|---|---|---|---|---|---|---|---|
| Specifications | EDM-AF5 | EDM-4 | EDM-3 | EDM-2 | EDM-1 | EDM-200 | EDM C-3 | EDM C-200 |
| Grade Classification | Angstrofine | Ultrafine | Ultrafine | Ultrafine | Ultrafine | Superfine | Copper Ultrafine | Copper Superfine |
| Average Particle Size (Micron) | < 1 | < 4 | < 5 | < 5 | < 5 | 10 | < 5 | 10 |
| Flexural Strength (psi) | 14,500 | 17,500 | 13,300 | 11,200 | 9,700 | 9,000 | 20,300 | 12,100 |
| Compressive Strength (psi) | 22,100 | 21,500 | 18,100 | 16,900 | 14,200 | 15,500 | 28,350 | 23,200 |
| Hardness (Shore) | 83 | 76 | 73 | 71 | 69 | 68 | 66 | 62 |
| Electrical Resistivity (Micro-Ohm/inch) | 850 | 500 | 615 | 620 | 760 | 580 | 127 | 114 |
| Maximum Block Size (inches) | 2x8x12 | 4x12x40 | 4x12x40 | 4x12x40 | 4x12x40 | 6x24x60 | 2x8x12 | 4x8x12 |
| Method of Manufacture | Molded | Molded | Molded | Molded | Molded | Molded | Impregnated | Impregnated |
Belmont’s exclusive line of Ameri-Graph EDM materials is manufactured in the USA by Mersen. Each graphite grade, from our US-500 to US-950, are isostatically molded to provide consistent results regardless of the direction of the cut. Ameri-Graph grades were developed to provide a mid-range U.S. quality EDM graphite that covers a wide range of applications.
| Graphite Grade | Target Application |
|---|---|
| Ameri-Graph US-950 | Suitable for wire EDM electrodes, deep holes, and fine ribs. Best performance on steel, refractory steel, titanium, molybdenum, copper, and tungsten carbide. |
| Ameri-Graph US-800 | Suitable for wire EDM electrodes, deep holes, and fine ribs. Best performance on steel, and refractory steel. |
| Ameri-Graph US-700 | Suitable for wire EDM electrodes, and deep holes. Best performance on steel, and refractory steel. |
| Ameri-Graph US-600 | Suitable for steel applications and can easily be machined into electrodes. |
| Ameri-Graph US-500 | Suitable for steel applications and can easily be machined into electrodes. |
| Ameri-Graph Graphite | |||||
|---|---|---|---|---|---|
| Specifications | US-950 | US-800 | US-700 | US-600 | US-500 |
| Grade Classification | Fine Grain | Fine Grain | Universal | Universal | Universal |
| Average Particle Size (Micron) | 5 | 7 | 9 | 11 | 12 |
| Flexural Strength (psi) | 11,000 | 8,700 | 8,000 | 7,500 | 6,500 |
| Hardness (Shore) | 80 | 60 | 65 | 65 | 55 |
| Electrical Resistivity (Micro-Ohm/inch) | 500 | 500 | 480 | 488 | 539 |
| Maximum Block Size (inches) | 12x12x36 | 12x24x36 | 12x24x72 | 12x24x72 | 12x24x72 |
| Method of Manufacture | Molded | Molded | Molded | Molded | Molded |
Mersen is a worldwide leader in iso-molded graphite manufactured in the USA. Mersen has been producing EDM graphite for more than 50 years and has earned a reputation as an innovative and dependable producer of high quality EDM graphite.
| Graphite Grade | Target Application |
|---|---|
| Ellor DS4 | Suitable for wire EDM electrodes, deep holes, and fine ribs. Best performance on steel, refractory steel, titanium, molybdenum, copper, and tungsten carbide. |
| Ellor DS4C | Suitable for most applications requiring EDM performance, precision, and where strength is critical. |
| Mersen Ellor Graphite | ||
|---|---|---|
| Specifications | DS4 | DS4C |
| Grade Classification | Ultra-Fine Grain | Copper Impregnated |
| Average Particle Size (Micron) | 4 | 4 |
| Flexural Strength (psi) | 13,053 | 16,969 |
| Hardness (Shore) | 70 | 75 |
| Electrical Resistivity (Micro-Ohm/inch) | 539 | 88 |
| Maximum Block Size (inches) | 4x12x12 | 2x8x12 |
| Method of Manufacture | Molded | Impregnated |