Purpose:

This specification covers steel cleanliness requirements in metric SI units for special aircraft-quality ferromagnetic steels, other than hardenable corrosion resistant steels, by magnetic particle inspection methods.

AMS 2304 is the inch/pound version of this MAM.

Application:

This procedure has been used typically for the cleanliness evaluation of blooms, billets, tube rounds, stock for forging or flash welded rings, slabs, bars, sheet, 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.

Product qualified to this specification is not recommended for use in parts where the high transverse properties of vacuum-arc-remelted or electroslag remelted steels are required (See 8.2).