EFI Alloy 50 Properties

efi alloy 50 mechanical physical properties chemistry specificationsEd Fagan Inc. (EFI) Alloy 50 is a soft magnetic alloy typically used in applications were high initial permeability, maximum permeability and low core loss is needed.  The tables below provide typical physical, mechanical and chemistry data for analysis.  Also included are the DC and AC magnetic properties as it applies to EFI Alloy 50.

For an EFI Alloy 50 data sheet, or any other Soft Magnetic Alloys data sheets, please go to our Alloys and Metals Literature Library section.

If you have any questions or concerns about the properties of this alloy for your next application, please contact us at 800-348-6268.  Our sales team will gladly assist you.

EFI Alloy 50 Typical DC Magnetic Properties
Saturation Induction - Gauss14,500
Maximum Permeability100,000
Coercive Force - Oersteds0.06
Coercive Force - A/m4.77
EFI Alloy 50 Typical AC Magnetic Properties
Core Loss W/lb @ 400Hz & 20k GN/A
B-40 Permeability @ 60Hz6,500
N/A = not a typical application value
EFI Alloy 50 Physical Properties 
Densitylb/cu in0.295
Specific Gravity8.18
Curie Temp°F840
Melting Point°F2600
Electrical ResistivityMicrohms-cm49
ohm-cir mil/ft290
Thermal ConductivityW/cm °C0.13
BTU-in/sq. ft-hr-90
Specific HeatCal/g- °C0.12
BTU/lbm- °F0.12
Thermal Expansionppm / °F (75°F to 842°F)5.0
ppm / °C (25°C to 450°F)9.0
EFI Alloy 50
Mechanical Properties
Tensile Strengthksi75
Yield Strengthksi23
Elongation% in 2 in.40
Typical Hardness Ann.Rockwell HRB80
Modules of ElasticityMpsi24
EFI Alloy 50 Chemistry 
Manganese, max0.8
Silicon, max0.5
Phosphorus, max0.03
Sulfur, max0.01
Chromium, max0.30
Molybdenum, max0.30
Cobalt, max0.5
Copper, max0.30
Source: ASTM A753
EFI Alloy 50 Specifications  
ASTM A753MIL N-14411UNS K94840

For additional information on specifications of the materials distributed by Ed Fagan Inc., please visit the websites of the international standards organizations that develops and publishes technical standards, ASTM International and ASM International.

Ed Fagan Inc. is the leading supplier of soft magnetic alloys since 1965. Depend on us for quality, mill-certified materials, competitive pricing and stock items that can ship within 24-hours of your order confirmation.