This specification has been declared NONCURRENT by the Aerospace Materials Division, SAE, as of September 1995. It is recommended, therefore, that this specification not be specified for new designs. Alloy: 51100 UNS Number: G51986
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.