This specification covers a centrifugally-cast, alloyed iron in the form of sleeves for the fabrication of piston rings. Primarily for use as top compression rings in aircraft piston engines. Rings usually require chromium plating for compatibility with the cylinder barrel material.
SAE AMS7311G-2004 history
2017SAE AMS7311H-2017 Piston Rings@ Centrifugally-Case Alloyed Iron 0.50Mo - 0.50Cu
2013SAE AMS7311G-2013 Piston Rings, Centrifugally-Case Alloyed Iron 0.50Mo - 0.50Cu
2004SAE AMS7311G-2004 Piston Rings, Centrifugally-Cast Alloyed Iron 0.50Mo - 0.50Cu
2000SAE AMS7311F-2000 Piston Rings, Centrifugally-Cast Alloyed Iron 0.50Mo - 0.50Cu
1990SAE AMS7311F-1990 Piston Rings@ Centrifugally-Cast Alloyed Iron 0.50Mo - 0.50Cu
1983SAE AMS7311E-1983 PISTON RINGS, CENTRIFUGALLY-CAST ALLOYED IRON 0.50Mo - 0.50Cu
1974SAE AMS7311D-1974 PISTON RINGS, CENTRIFUGALLY CAST IRON 0.50Mo - 0.50Cu
1969SAE AMS7311C-1969 PISTON RINGS, CENTRIFUGALLY CAST IRON 0.50Mo - 0.50Cu
1958SAE AMS7311B-1958 PISTON RINGS, CENTRIFUGALLY CAST IRON 0.5Mo - 0.5Cu
1952SAE AMS7311A-1952 PISTON RINGS, CENTRIFUGALLY CAST IRON 0.5Mo - 0.5Cu