This standard American Welding Society (AWS). Draft. 60p. This
specification contains the requirements for designing, friction
stir welding, and inspecting aluminum, aerospace hardware. Friction
stir welding (FSW) produces a weld between two butting workpieces
by the friction heating and plastic material displacement caused by
a rotating tool that traverses along the weld joint. This is a
working document under consideration by an AWS Committee. It is
made available solely to solicit comments from interested parties,
and may not be relied upon or utilized for any other purpose. Draft
documents may change significantly in subsequent versions