Copper scrap with the purity of copper 99%, 97%, 95%. 99% copper scrap is mainly composed by pure copper wire and pure electrical cable, the diameter is above 1.6mm. 97% copper scrap is mainly scrap copper wire, cable. 95% copper scrap mainly is scrap copper wire,cable,tube etc. Other copper scrap wire:. #1 cu: 99-96%. #2 cu: 96-94%. #3 cu: 94-92%. Wire diameter: 0.30mm, 0.25mm, 0.20mm. Weight/spool: 3 kg, 5 kg, 7 kg, 15 kg, 20kg. Tensile strength: 1000 n/mm2, 900 n/mm2, 500 n/mm2, 450 n/mm2, n/mm2. 3.range of usage:. Electrical, light industry, machinery, building industry, national defense industry.