- An alloy of copper, nickel, tungsten, and aluminium, previously used by jewellers.
- An alloy composed of copper, nickel, tungsten, and aluminum; -- used by jewelers.
- a type of aluminium bronze, the ingredients of which tend to be copper 1,000 components, nickel 700, antimony 50, and aluminium 20.
- A trade-name of a number of alloys designed for ornamental use. One of these consists of copper alloyed with nickel, aluminium, and tungsten.