Stainless steel solid wire is used in two different weld processes. Gas Metal Arc Welding (GMAW or MIG) and Gas Tungsten Arc Welding (GTAW or TIG). Stainless steel wire is available in a wide variety of diameters from .023 - .093. It is also available in spooled wire and cut lengths. Stainless steel wire is typically used for the joining of two pieces of steel in the electric or gas application. The wire is smooth and drawn with a bright finish.

Stainless steel wire is available in a wide variety of chemical metallurgies. The different chemical make-up not only determines the different weldability of the wire, but also the tensile strength of the finished product. An Argon, CO₂, and/or helium based shielding gas is often used as a fluxing agent to prevent atmosphere from getting into the weld puddle before it hardens.

In selecting the proper wire for a particular job, it is important to consider the parent metal, the strength of the weld needed, the finished appearance of the weld, and the required resistance to oxidation. Stainless steel wires are typically available in the following classifications based on its chemical composition: 308, 309, 312, 316, 320 and 347. Stainless steel wire are usually recommended for welding dissimilar metals also.

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