ANCHOR copper-bonded stranded steel wire use high purity copper for a world-class continuous electro-depositing process, hence forming alloy molecules structure to maintain high performance of anti-corrosion and conductivity. In IEEE Std 80-2000, it is listed as a common material.
Above 40 years lifetime due to high anti-corrosion performance of copper
Steel core is annealed low carbon steel, flexibility is equal to copper, tensile strength is higher than copper
Process is electrolyzation between steel and copper, the fine bonding can stand U shape bending. Conductivity is 30% or 40% of pure copper.