This guide present a description of wrought nickel-based alloys and the processes and procedures that can be used to join these materials. This guide stress the process basics, parameters, applications, and safety considerations. Practical information has been included in the form of figures, tables, and graphs which should prove useful in determining capabilities and limitations in the joining of these materials. Readers who desire additional information about the joining of nickel-based alloys should consult the references in 2.1 Reference Documents.

This standard makes use of both the International System of Units (SI) and U.S. Customary Units. The measurements may not be exact equivalents; therefore, each system must be used independently of the other without combining in any way. The standard with the designation G2.1M:2002 uses SI Units. The standard designation G2.1:2002 uses U.S Customary Units. The latter are shown within parentheses ( ) or in appropriate columns in tables and figures.