HIPERCO 50A:Composition (Nominal):Fe49,Co49,V2 :)---Hiperco 50A Alloy is an iron-cobalt-vanadium soft magnetic alloy which exhibits high magnetic saturation (24 kilogauss), high D.C. maximum permeability, low D.C. coercive force, and low A.C. core loss.:)---Specifications: ASTM A801 Alloy Type 1, MIL A 47182