The wire is bent into a specific shape, usually for a specific purpose. The wire used in wire form can be made of any suitable metal. The type of metal used can vary according to specific needs. For example, the wire can be made of the following metals: stainless steel, copper and aluminum. In general, the different wire forms and their role determine the material used. Different metals have different advantages and disadvantages, such as their corrosion resistance, their relative strength, size and even appearance. 

Materials and Surface Treatment: 

Carbon Steel: 65 Mn, 72 A, 82 B, SWP, galvanized wire, nickel plated wire 

Stainless Steel: SS 201, SS 302, SS 304, SS 316, SS 631 

Copper Base Alloys: beryllium copper spring, phosphor bronze, brass spring, tin bronze, silicon bronze 

Alloy Steel: 60Si2Mn, 55CrV, 55CrSi 

Surface Treatment: Zinc, Nickel, Copper, Gold/Silver, Chrome Plating, Black Oxide, Electrophoresis