This specification covers sampling and testing procedures to determine conformance of premium aircraft-quality ferromagnetic steels to cleanliness requirements of material specifications in which this specification is referenced. Applicable primarily to blooms, billets, extrusions, tube rounds, stock for forgings and rings, bars, and heavy wall tubing used in the fabrication of highly stressed parts and assemblies where very rigid magnetic particle standards are used in the final inspection of such parts.
This specification covers an aircraft-quality, low-alloy steel in the form of heat-treated bars 1.50 inches (38.1 mm) and less in diameter or least distance between parallel sides.
This specification covers steel cleanliness requirements in SI (metric) units for aircraft-quality ferromagnetic steels, other than hardenable corrosion-resistant steels, by magnetic particle inspection methods.
This specification covers manganese-silicon-nickel alloy steel bars and forging stock of aircraft quality and suitable for heat treatment to 220,000 psi minimum tensile strength.