Ed Fagan Inc. is a leading supplier of soft magnetic alloys including Hiperco® 50, Hiperco 50A and Hiperco 50 HS. Given the high magnetic saturation properties of these alloys, they have been employed in many applications with high rotational speeds. Example applications are provided below:
CarTech Hiperco® 50 Applications
Alloy strip is employed in the manufacture of rotor and stator laminations in motors and generators for aircraft power generation. These laminations are stamped from cold rolled strip and must be final annealed in a protective atmosphere or vacuum environment at a temperature which will provide an optimum combination of mechanical and magnetic properties to withstand the high stresses encountered in service.
CarTech Hiperco® 50A Applications
Beneficial for magnetic cores in electrical equipment requiring high permeability at high magnetic flux densities. It is also found in tape cores where lowest A.C. losses and high permeability at high inductions are desired,
CarTech Hiperco® 50 HS Applications
Alloy strip should be considered a candidate for use in the manufacture of rotor laminations for aircraft power generation applications, as well as for magnetic bearings. Laminations are stamped from cold rolled strip. They must be final annealed in a protective atmosphere or vacuum environment at a temperature which will provide an optimum combination of magnetic and mechanical properties to withstand the high stresses encountered in service.
Hiperco 50 is also used in commercial aircraft safety systems including a “RAT” (ram air turbine) and in the “APU” (auxiliary power unit). Famously, on January 15, 2009 bird strikes on US Airway flight 1549 shortly after takeoff from New York’s LaGuardia Airport resulted in loss of power in both main engines.
Fortunately, these planes have both an APU and RAT electric generators made with Hiperco 50 rotors and stators. The RAT and APU provided the emergency power that enabled Captain Sullenberger to make the needed flight maneuvers to bring US Airway flight 1549 down safely.
The aircraft’s main generators also have Hiperco 50, but since they are driven by the main engines, they could no longer supply power.