This specification has been declared "CANCELLED" by the Aerospace Materials Division, SAE, as of December 2010 and has been superseded by ASTM A 753. The requirements of the latest issue of ASTM A 753 shall be fulfilled whenever reference is made to the cancelled AMS 7705. By this action, this document will remain listed in the Numerical Section of the Index of Aerospace Materials Specifications, noting that it has been superseded by ASTM A 753.

This specification covers a magnetic nickel-iron alloy in the form of bars, forgings, and forging stock.

These products have been used typically in magnetic circuits requiring high magnetic permeability at low flux densities after high temperature annealing in hydrogen, but usage is not limited to such applications.