C7521 C1100 Brass Copper Bar Red TP1 8mm 10mm Diameter Bright

C7521 C1100 Brass And Copper Bar Red TP1 8mm 10mm Diameter Bright

Red copper has good electrical conductivity, thermal conductivity, corrosion resistance and processing properties, and can be welded and brazed. It contains less impurities to reduce conductivity and thermal conductivity. The trace oxygen has little effect on conductivity, thermal conductivity and processing properties, but it is easy to cause "hydrogen disease". It is not suitable for processing (annealing, welding, etc.) and use in high temperature (such as>370 ℃) reducing atmosphere.
A small amount of impurities, especially phosphorus, arsenic and aluminum, will greatly reduce the conductivity of copper. Oxygen content in copper (a small amount of oxygen is easily mixed in copper smelting) has a great impact on conductivity. Copper used in electrical industry must generally be oxygen free. In addition, lead, antimony, bismuth and other impurities will prevent copper crystals from combining, causing hot brittleness, and will also affect the processing of pure copper. This kind of pure copper with high purity is generally refined by electrolysis: using impure copper (i.e. crude copper) as anode, pure copper as cathode, and copper sulfate solution as electrolyte. When the current passes, the impure copper on the anode will gradually melt, and the pure copper will gradually precipitate on the cathode. Copper thus refined; The purity can reach 99.99%.