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Due to differences in the production processes for copper rods, the oxygen content and appearance of the finished products vary. Copper rods produced by the upward drawing process have an oxygen content of less than 20 ppm and are therefore referred to as oxygen-free copper rods; in contrast, copper rods produced via continuous casting and rolling are hot-rolled under protective atmospheres, with an oxygen content ranging from 200 to 500 ppm, though it can occasionally exceed 700 ppm.
Based on oxygen and impurity content, oxygen-free copper rods are further classified into TU1 and TU2 grades. TU1 oxygen-free copper rods achieve a purity of 99.99%, with an oxygen content not exceeding 0.001%; TU2 oxygen-free copper rods achieve a purity of 99.95%, with an oxygen content not exceeding 0.002%.
Copper rods are rod-shaped conductive materials made from high-purity copper, serving as the core raw material for products such as wires and cables and enameled wires. Their key advantages include exceptionally high electrical and thermal conductivity, excellent ductility, and superior corrosion resistance.
Copper rods are rod-shaped conductive materials made from high-purity copper, serving as the core raw material for products such as wires and cables and enameled wires. Their key advantages include exceptionally high electrical and thermal conductivity, excellent ductility, and superior corrosion resistance.