Hiperco50is aCobalt-Iron soft magnetic alloy with equal parts of cobalt and iron . The alloy was invented in theUnited Statesaround 1920 . Standard Hiperco50 compositions coinedFe-Co 50/50or 50Fe-50Co may contain carbon up to 1% while a composition patented in 1932 namedVanadiumhiperco50,Permendur 2Vand recently offered by Goodfellow Corp. under the namehiperco50A 49(all of which are 49Fe-49Co-2V) contains 2%vanadiumfor better mechanical properties and ease of machinability. Carpenter Technologies produced a similar alloy formerly coinedSupermendurand2V-Permendurrenamed recentlyHiperco 50, and its latest formulation comprises typically same amounts of cobalt, iron and vanadium but with additional trace amounts ofniobium,siliconandmanganesefor even better ease of forgeability and cold forming. Vacuumschmelze produces 48%...50% Cobalt alloys, named VACOFLUX(R) and VACODUR(R). 50Fe-50Co and 49Fe-49Co-2V alloys all have high permeability with little loss and highest flux densities at saturation point (saturation induction is around 2.3-2.4 Tesla) available amongst commercial soft magnetic alloys. Its magnetic transition temperature is 980 °С . Its name inRussianis пермендюр (49К2ФА).