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Here are some questions you may care about…
Copper products need to be smelted.Pure copper that has gone through the processing procedure then needs to be smelted in order to form it into coils, sheets and other forms. The copper is exposed to high heat that is found in flash furnaces that are oxygen-enriched for extremely high temperatures.
While their prices may vary based on the alloys, copper is typically more expensive than brass and bronze. The reduction in bronze price may be due to the lower copper content in the alloy. Likewise, brass is the least expensive because it contains more zinc content.
Tubing is usually more expensive than pipe due to tighter manufacturing tolerances. Interestingly, while the stated and measured OD's of tubing are almost exact in most cases, copper tubing generally has a measured OD that is 1/8” larger than stated OD. As such, maybe it should be called copper pipe.
Brass as a metal is stronger and stiffer compared to copper. In terms of metrics of hardness, brass exhibits hardness ranging from 3 to 4. On the other end, the hardness of copper ranges from 2.5 to 3 on the metal harness chart.
The advantages of copper foil and aluminum foil are good electrical conductivity, forming an oxidation protective film, soft texture, good for bonding, mature manufacturing process, and relatively low price. Therefore, they are selected as the main materials for current collectors of Li-ion batteries. The positive electrode potential of lithium-ion batteries is high, and the oxide layer of aluminum foil is relatively dense, which can prevent the oxidation of the current collector, while copper will undergo lithium intercalation reaction at high potential. Not suitable for positive electrode current collectors. Aluminum foil is generally used as the positive electrode current collector; while the potential of the negative electrode is low, aluminum foil is easy to form aluminum-lithium alloy at low potential. Copper foil is generally used as the negative electrode collector, and there is no interchangeability between copper foil and aluminum foil.
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