A .iges file format is used to transfer two-dimensional or three-dimensional data for a design between CAD software, and can be saved as IGES or a .IGS file. This file type most commonly contains information about a model's surface - but may also house data such as the wireframe and/or solid model, as well as circuit information. Like other file types, IGES files are in ASCII format on the Initial Graphics Exchange Specification standard.
Originally designed and used by the USAF (United States Air Force) in the 1970s for manufacturing aerospace parts, IGES format is now used in many other industries, such as machinery and automotive. Over the years, however, IGES has been replaced by more efficient file formats like .stp and Parasolid - as such, its use has significantly declined since the late 1990s.
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