Tin bronze is a non-ferrous metal alloy with the smallest casting shrinkage, which is used to produce castings with complex shapes, clear Outlines and low air tightness requirements. Tin bronze is very resistant to corrosion in atmosphere, sea water, fresh water and steam, and is widely used in steam boilers and Marine ship parts. Phosphorus containing tin bronze has good mechanical properties and can be used as wear-resistant parts and elastic parts of high precision machine. Leaded tin bronze is commonly used for wear parts and plain bearings. Zinc-containing tin bronze can be used for high air tightness casting.
Tin bronze is the most widely used and the largest in the electrical and electronic industry, accounting for more than half of the total consumption. This type is used for various cables and wires, motors and transformers, switches and printed circuit boards in the manufacture of machinery and transport vehicles, for the manufacture of industrial valves and accessories, meters, plain bearings, molds, heat exchangers and pumps, etc. It is widely used in the chemical industry in the manufacture of vacuum, still, brewing pot and so on. Used in the defense industry to manufacture bullets, shells, gun parts, etc., for every 3 million bullets produced, 130-140 tons of copper are required. In the construction industry, it is used for various pipes, pipe fittings, decorative devices, etc

oxygen-free copper
According to the oxygen content and impurity content, oxygen free copper is divided into 1 and 2 oxygen free copper. No. 1 oxygen-free copper purity of 99.97%, oxygen content is not more than 0.003%, the total content of impurities is not more than 0.03%; The purity of No. 2 oxygen-free copper is 99.95%, the oxygen content is not more than 0.005%, and the total impurity content is not more than 0.05%.
Oxygen free copper has no hydrogen embrittlement, high conductivity, good processing and welding properties, corrosion resistance and low temperature properties. The standards of oxygen content in different countries are not exactly the same, and there are certain differences.
OFC (oxygen free copper) : metallic copper with a purity of 99.995%. Generally used in audio equipment, vacuum electronic devices, cables and other electrical and electronic applications. Among them, there is LC-OFC (linear crystalline oxygen-free copper or crystalline oxygen-free copper) : the purity is above 99.995% and OCC (single crystal oxygen-free copper) : the highest purity, above 99.996%, and it is divided into PC-OCC and UP-OCC.
The single-crystal oxygen-free Copper, manufactured by Ultra Pure Copper by Ohno Continuous Casting Process (UPOCC), has non-directional, high purity, corrosion resistance, and extremely low electrical impedance, making the wire suitable for high-speed and high-quality transmission signals.