Copper alloy refers to an alloy formed by adding one or several other elements to pure copper. There are many colors of copper alloys. Non-copper types of copper alloys have different colors. Copper alloys mainly have purple, yellow, cyan and other colors.
Brass: refers to an alloy based on copper and zinc, which can be subdivided into simple brass and complex brass. The third component of complex brass is named nickel brass, silicon brass, etc.;
Bronze: refers to copper-based alloys other than copper-nickel and copper-zinc alloys. The main varieties are tin bronze, aluminum bronze, and special bronze (also known as high copper alloy);
White copper: refers to copper-nickel alloy;
Red copper: refers to pure copper. The main varieties include oxygen-free copper, red copper, phosphorus deoxidized copper, and silver copper.
Copper alloys are divided into non-alloy copper and alloy copper according to the alloy system. Non-alloy copper includes high-purity copper, tough copper, deoxidized copper, oxygen-free copper, etc. Traditionally, people refer to non-alloy copper as red copper or pure copper. Other copper alloys are alloyed copper. China and Russia divide copper alloys into brass, bronze and white copper, and then divide small alloy systems into large categories.
Copper alloys are divided by function into copper alloys for electrical and thermal conductivity (mainly non-alloyed copper and microalloyed copper); structural copper alloys, which include almost all copper alloys; corrosion-resistant copper alloys, mainly tin brass, aluminum yellow copper, various non-white copper, aluminum bronze, titanium bronze, etc.; wear-resistant copper alloys, mainly including complex brass, aluminum bronze, etc. containing lead, tin, aluminum, manganese and other elements; easy-cutting copper alloys, copper-lead, copper- tellurium, copper-antimony and other alloys; elastic copper alloys, mainly including antimony bronze, aluminum bronze, beryllium bronze, titanium bronze, etc.; damping copper alloys, high manganese copper alloys, etc.; artistic copper alloys, pure copper, simple single copper, tin bronze , aluminum bronze, white copper, etc.
Copper alloys are divided according to the material formation method into cast copper alloys, which can be used for casting and deformation processing; deformed copper alloys, which can be used for casting; cast copper alloys and deformed copper alloys can be subdivided into red copper and brass for casting. , bronze and white copper.

