The Materials You Need When You Need Them

EFI Alloy 79 (aka Magnifer 79042, HyMu 801, Hipernom1, Moly-Permalloy, Permalloy 80)

A soft magnetic alloy consisting of 80% Nickel, 5% Molybdenum, and balance Iron used where extremely high initial & maximum permeability and minimum hysteresis is needed.

EFI Alloy 79 Products

Ed Fagan Inc. stocks EFI Alloy 79 in a variety of forms and dimensions. Below are most of the standard stock form/sizes. If you do not see the size or form of EFI Alloy 79 that you require, please call one of our materials experts; our sales people are very knowledgeable and can assist you. We can cut, slit, shear, or center less grind EFI Alloy 79 to your exact specifications, and we also have tremendous versatility when it comes to custom sizes, packages, and unusual materials.

EFI Alloy 79 Rod

EFI Alloy 79 Rod Diameter

EFI Alloy 79 Rod Diameter

.140” EFI Alloy 79 Rod

.500” EFI Alloy 79 Rod

.218” EFI Alloy 79 Rod

.625” EFI Alloy 79 Rod

.250” EFI Alloy 79 Rod

.750” EFI Alloy 79 Rod

.375” EFI Alloy 79 Rod

1.000” EFI Alloy 79 Rod

.410” EFI Alloy 79 Rod

1.250”EFI Alloy 79 Rod

.424” EFI Alloy 79 Rod

1.625” EFI Alloy 79 Rod


EFI Alloy 79 Sheet Annealed

EFI Alloy 79 Sheet Thickness

EFI Alloy 79 Sheet Thickness

.010” EFI Alloy 79 Sheet

.040” EFI Alloy 79 Sheet

.014” EFI Alloy 79 Sheet

.050” EFI Alloy 79 Sheet

.020” EFI Alloy 79 Sheet

.062” EFI Alloy 79 Sheet

.025” EFI Alloy 79 Sheet

.125” EFI Alloy 79 Sheet

.030” EFI Alloy 79 Sheet

 

EFI Alloy 79 Strip/Coil Annealed

EFI Alloy 79 Strip/Coil Thickness

EFI Alloy 79 Strip/Coil Thickness

.004” EFI Alloy 79 Strip/Coil

.020” EFI Alloy 79 Strip/Coil

.010” EFI Alloy 79 Strip/Coil

.025” EFI Alloy 79 Strip/Coil

.014” EFI Alloy 79 Strip/Coil

 

 

Applications

Electro-magnetic shielding, specialty transformer laminations,toroidal tape wound cores, high quality motor laminations, stepping motors.

EFI Alloy 79 Properties

 

EFI Alloy 79 Typical DC Magnetic Properties

Saturation Induction - Gausses

8,700

Maximum Permeability

230,000

Coercive Force - Oersteds

0.015

Coercive Force - A/m

1.19


EFI Alloy 79 Typical AC Magnetic Properties

Core Loss W/lb @ 400Hz & 20k G

N/A

B-40 Permeability @ 60Hz

45,000

 

N/A = not a typical application value


 

EFI Alloy 79 Physical Properties

Density

lb/cu in

0.316

Specific Gravity

 

8.74

Curie Temp

°F

860

 

°C

460

Melting Point

°F

2650

 

°C

1454

Electrical Resistivity

Micro-ohm-cm

59

 

ohm-cir mil/ft

394

Thermal Conductivity

W/cm °C

0.35

 

BTU-in/sq. ft-hr-

240

Specific Heat

Cal/g- °C

--

 

BTU/lbm- °F

--

Thermal Expansion

ppm / °F (75°F to 842°F)

7.5

 

ppm / °C (25°C to 450°F)

13.6


 

EFI Alloy 79 Mechanical Properties

Tensile Strength

ksi

98

 

MPa

676

Yield Strength

ksi

38

 

MPa

262

Elongation

% in 2 in.

40

Typical Hardness Ann.

Rockwell HRB

85

Modules of Elasticity

Mpsi

31.4

 

kMPa

217


EFI Alloy 79 Chemistry

maximum % unless noted

Iron

Bal

Nominal Nickel

80

Nominal Cobalt

--

Molybdenum

5.0

Carbon

0.03

Manganese

0.95

Silicon

0.42

Vanadium

--

Niobium

--

Phosphorus

0.02

Sulfur

0.008


EFI Alloy 79 Specifications

ASTM A753

MIL N-14411C

ED FAGAN INC. supplies the highest quality special purpose metals and alloys for Aerospace/Aviation, Defense, Electronics, Magnetic, Medical, Lighting, Optical, Telecommunications, Ceramics, Heat Treating, and other high-technology industries.

1. Trademark Carpenter Technology Corp., Reading PA
2. Trademark ThyseenKrupp-VDM, Germany

Soft Magnetic Alloys

Ed Fagan Inc. stocks a variety of soft magnetic alloys for wide range of applications. EFI carries:
Alloy 79
Alloy 50
Hiperco 50 & 50A
Vim Var Core Iron
Radiometal 4550

And we also have a large selection of other types of specialty metals and alloys for high technology applications, including:
Controlled Expansion Alloys
Electrical/Electronic Nickel
Refractory Metals and Alloys
Hard to Find Materials