Nickelbronze

Nickelbronze is a copper alloy that contains nickel and often zinc. It is also known as cupronickel or copper-nickel. The specific composition of nickelbronze can vary, but it typically contains a significant percentage of nickel, ranging from 10% to 45%, with the remainder being copper and sometimes small amounts of other elements like iron and manganese.

The addition of nickel to copper significantly alters the alloy's properties. Nickelbronze is known for its excellent corrosion resistance, particularly in saltwater environments. This makes it a popular choice for marine applications, such as shipbuilding, offshore structures, and desalination plants. It also exhibits good resistance to biofouling, which is the accumulation of marine organisms on submerged surfaces.

Beyond its marine applications, nickelbronze is used in coinage, heat exchangers, and decorative items. Its color can range from a pale gold to a silvery appearance, depending on the nickel content. The alloy is also relatively strong and ductile, allowing it to be formed into various shapes. While not as common as brass or bronze, nickelbronze is valued for its unique combination of properties, especially its superior resistance to corrosion in challenging environments.