... aero and electric and ship vessel special Gas turbine engines for aero& electric, ship vessel etcs.-All mill ... Aerospace, Auto, Marine, Engine etc.Mateialcarbon steel, alloy,Stainless,super alloy(nickel,titanium,copper) Precision Castings for Aviation&Aerospace Industry, ... AMS 5377F for Aviation & Aerospace Industry. The metal for castings and specimens shall be melted and poured under vacuum without ...