EFI Alloy 79 (aka Magnifer 7904®, HyMu® 80, Hipernom®, Moly-Permalloy, Permalloy 80)

EFI Alloy 79 – Soft Magnetic Alloy

EFI Alloy 79 is a soft magnetic alloy comprised of non-oriented 80% nominal nickel, 15.5% nominal iron, 4.5% nominal molybdenum with very high initial permeability and maximum permeability with minimum hysteresis loss.  This makes the alloy useful for  a wide range of applications, including Electro Magnetic Interference (EMI) shielding from low frequency magnetic fields.

EFI Alloy 79 is also known by the following manufacturer’s trade names:

  • Magnifer® 7904 (VDM GmbH)
  • HyMu®80 (Carpenter Technology Corp.)
  • Hipernom® (Westinghouse Alloys)
  • Moly Permalloy® 80 (ATI)


Forms & Conditions

Ed Fagan Inc. stocks EFI Alloy 79 in a variety of forms and conditions to meet the needs of our customers:

  • Strip-coil and sheet in the annealed condition enable users to perform a variety of cold forming operations such as deep drawing, spinning and hydro-forming.
  • Round bar, rod, wire rod in stress relieved and as drawn conditions for machining.

Ed Fagan Inc.’s primary suppliers are VDM GmbH Werdohl, Germany and Carpenter Technology Corp, Reading, PA.

Ed Fagan Inc. broad inventory is available for immediate shipment.  We provide certificates of analysis and conformance gratis.   All of our materials are free from conflict minerals, conform to DFARs and complies with European RoHS requirements.  Our processes conform with ISO 9001 and AS 9120.

The alloy is primarily found in transformer cores, magnetic shielding, ground fault circuit interrupters (GFIs), tape-wound toroids and laminations.  Also a beneficial alloy for use in miniature transformers and other applications where small size and low weight are important.

If you have any questions about EFI Alloy 79, please contact one us. The Ed Fagan Inc. sales team of skilled professionals are ready to assist you with all your material needs.  Call us toll-free at 800-348-6268 or by email at sales@edfagan.com

Ed Fagan Inc. is your leading supplier for high-quality soft magnetic alloys.  Since 1965 we have been serving the aerospace, aviation, communications, defense, electronic, energy, medical, research and other high-technology markets with the materials they need, when they need it.



Magnifer® 7904 is a registered trademark of VDM GmbH, Germany

CarTech® HyMu® “80” is a registered trademark of CRS Holdings Inc., Delaware