Tin bronze. Aluminum bronze. There are also copper-nickel alloys. Complex cupronickel

The cupronickel alloy with the addition of manganese, iron, zinc, aluminum and other elements is called complex cupronickel (i.e. cupronickel with more than three elements), including iron cupronickel, manganese cupronickel, zinc cupronickel and aluminum cupronickel. In complex cupronickel, the second main element symbol and the component number group other than the copper content indicate the content of various elements. For example, BMn3-12 means that the nickel content is about 3 and the manganese content is about 12.

There are 4 models of complex cupronickel:

① Iron cupronickel: models include Bfe-1.5 (Fe)-0.5 (Mn), Bfe10-1 (Fe)-1 (Mn) , Bfe30-1(Fe)-1(Mn). The amount of iron added in iron-nickel copper does not exceed 2 to prevent corrosion and cracking. It is characterized by high strength and its ability to resist corrosion, especially the corrosion of flowing seawater, can be significantly improved.

②Manganese white copper: Models include BMn3-12, BMn4.0-1.5, and BMn43-0.5. Manganese white copper has a low temperature coefficient of resistance, can be used in a wide temperature range, has good corrosion resistance, and has good processability.

③Zinc-nickel copper: Models include BZn18-18, BZn18-26, BZn15-12 (Zn)-1.8 (Pb), BZn15-24 (Zn)-1.5 (Pb). Zinc-nickel copper has excellent comprehensive mechanical properties, excellent corrosion resistance, good cold and hot processing formability, and is easy to cut. It can be made into wires, bars and plates, and is used in the manufacturing of instruments, meters, medical equipment, daily necessities, communications and other fields. of precision parts.

④Aluminum cupronickel: Models include Bal13-3, Bal16-1.5. It is an alloy formed based on copper-nickel alloy and added with aluminum. The density is 8.54-0.3. The alloy properties are related to the ratio of nickel and aluminum in the alloy. When Ni:Al=10:1, the alloy properties are the best. Commonly used aluminum-nickel coppers include Cu6Ni1.5Al, Cu13Ni3Al, etc., which are mainly used for various high-strength corrosion-resistant parts in shipbuilding, electric power, chemical industry and other industrial sectors.

Ordinary white copper

Copper-nickel binary alloy (i.e. binary copper-nickel) is called ordinary white copper. In ordinary white copper, the letter B indicates the content of added nickel, for example: B5 indicates that the nickel content is about 5, and the rest is about copper content. Models include B0.6, B19, B25, and B30.