This specification has been declared "CANCELLED" by the Aerospace Materials Division, SAE, as of June 2007, and has been superseded by AMS 2300. The requirements of the latest issue of AMS 2300 shall be fulfilled whenever reference is made to the cancelled MAM 2300. By this action, this document will remain listed in the Numerical Section of the Index of the Aerospace Materials Specifications noting that is it superseded by AMS 2300. This specification covers steel cleanliness requirements in metric (SI) units for premium aircraft-quality ferromagnetic steels, other than hardenable, corrosion-resistant steels, by magnetic particle inspection methods.

AMS 2300 is the inch/pound version of this MAM.

This procedure has been used typically for the cleanliness evaluation of blooms, billets, tube rounds, stock for forging or flash welded rings, slabs, bars, plate, tubing, and extrusions used in fabricating highly-stressed parts where very strict magnetic particle inspection standards are used in final inspection of such parts, but may be used for qualification of a heat, melt or lot of steel.