We can see that the surface of the copper and brass plate is not the same, the color of the brass plate is generally golden yellow, more glossy, but the color of the purple copper plate is red, but also glossy, purple copper plate is called red copper, is pure copper, copper and brass in the color is not the same at all! In fact, the color can be distinguished at a glance, the surface oxidation of the purple copper plate, there is a layer of red cuprous oxide, looks like the color is purple-red. Hardness on the purple copper to be harder than brass, similar weight! Thus, we can distinguish from the appearance of the color!
2, the composition of the distinction
Purple copper plate is the main component of copper, and copper content can reach more than 99.9%, although the composition of brass plate copper but also zinc, copper content in 60% up and down, zinc content in 40% up and down, and other grades of brass is not the same as the amount of lead will change, in the analysis of the chemical composition is also very good at distinguishing.

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