nickelbrass

Nickel brass is a copper-based alloy that contains zinc and nickel. It is part of the brass family and is characterized by a pale yellow color that lies between traditional brass and gold, a result of the added nickel and zinc. The exact composition varies by standard and supplier, but nickel-brass alloys typically contain copper as the base (about 60–70%), with zinc in the range of 25–40% and nickel at 1–5%. The nickel content is intended to improve strength, hardness, and color stability.

The alloy offers a balance of ductility and strength higher than ordinary brass, along with improved corrosion resistance in atmospheric conditions and against mild seawater exposure. It is generally easy to machine, cast, and form, and can be readily worked by standard metalworking techniques. Some nickel-brass grades respond to annealing to restore ductility after cold working.

Nickel brass is used for decorative hardware and fittings, architectural trim, plumbing components, and other applications where a yellow-brass appearance and good corrosion resistance are desirable. It has historically appeared in certain coinage and musical instrument fittings in various regions, though standard brass and cupronickel may be preferred for other uses. It should be distinguished from cupronickel (copper-nickel without significant zinc) and from classic brass (copper-zinc without nickel).