As differentiated by magnetic characteristics permeability shall be less than 1.2 before fabrication and not greater than 2.0 after fabrication as measured in a 200 oersted field sr-5 the manufacturers data
NSN 6130-01-420-6386
NSN 6240-00-997-2025
NSN 5950-00-050-2597
NSN 5925-00-401-2739
NSN 5920-01-449-4075
NSN 5905-01-050-7983
NSN 5996-00-235-9645
NSN 5965-00-035-4556
NSN 5910-01-094-7759
NSN 6135-01-364-0667
NSN 5895-01-324-2486
NSN 6145-01-560-1509