Copper is a kind of pure copper, also known as red copper. As the name implies, the appearance is purple red, and the conductivity and plasticity are better, but the strength and hardness are worse. It is easy to stick a knife when machining.
Brass is an alloy of copper and zinc. As the name implies, the appearance is yellow, with good electrical conductivity, plasticity and wear resistance.
The difference between red copper and brass:
1, The two can be distinguished by the naked eye, because the two colors are different.
2, The two contain different amounts of copper, copper is 100% copper (naturally pure when there is no pure, this is only said to be very high), brass is an alloy of zinc and copper, the same volume, copper content without red copper high.