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Round copper wire made from Cu-ETP1 and Cu-OF1 in bare, tin-plated, nickel-plated, silver-plated or gold-plated, hard or soft annealed. Single wire diameter ranging from Ø 0.04 mm to Ø 1.8 mm. Single wire for high-frequency (HF) technology: High-precision silver-plated single wire used as core for coaxial cables, size range from 0.10 mm to 1.8 mm. This single wire is manufactured on a specially designed machine and is characterised by a highly constant diameter, outstanding centricity and an extremely pure surface. Copper:(Cu ≥ 99,90 %-by-weight, oxygen max. 0,040) Oxygen free copper:Cu-OF1 (Cu 99,95 %-by-weight) Conductivity min.:101% IACS Electrical conductivity:≥ 58.58 (in annealed condition) m/Ωmm² at 20°C Thermal conductivity:400 W/(m*K) Density:8,9 g/m³ at 20°C