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
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