Grade: UF03 cobalt: 6 size: less than equal to 0.6 Hardness: 94.5 Specific Gravity: 14.65 Flexural strength: 360 Uses: High-speed cutting drills, milling cutters, glass fiber reinforced composite materials, plastics, laminate flooring, printed circuit board PCB. Early adopters of EDM electrodes copper or graphite electrodes, cheap but intolerant ablation, and now has been largely replaced copper tungsten electrodes. Tungsten copper electrode has the advantage of high temperature, high temperature strength, resistance to arc erosion and thermal conductivity properties, fast heat dissipation. Application concentrated in EDM electrodes, resistance welding electrodes and high-voltage discharge electrode. EDM electrode is characterized by many different specifications, the total volume is small and more. As copper-tungsten EDM electrode material should have as a high density and uniformity of the organization, particularly elongated rod, tubular and shaped electrode.