copper coated steel wire 1 copper layer average thickness than 0.25mm; 2 ... welding powder, grounding electrode, GEM and so on. copper clad steel round wire1, copper layer average thickness (conventional) ≥ 0.25mm; ... mm 2 3, flatness error ≤ 1mm 4, copper layer plasticity: grounding rods bent 30 º, the angle with no cracks. Applications ... requirements of the field of higher . copper coated steel wire