The red copper rod is called for its purple color. it's good electrical conductivity, thermal conductivity, corrosion resistance and processing properties, and might be welded and brazed. it's not necessarily pure copper, and sometimes atiny low amount of deoxidizing elements or other elements are added to enhance the fabric and performance, so it's also classified as a copper alloy.The copper round rod is extremely pure, containing over 99.95% copper. alittle amount of impurities, especially phosphorus, arsenic, aluminum, etc., will greatly reduce the conductivity of copper. Oxygen in copper (a bit of oxygen is well mixed in copper smelting) features a great influence on electrical conductivity, and copper employed in the electrical industry must generally be oxygen-free copper. additionally, impurities like lead, antimony, and bismuth will make the crystals of copper unable to mix together, causing hot brittleness and affecting the processing of pure copper.