The Materials You Need When You Need Them

EFI Alloy 50 (aka Magnifer 502, Carpenter High Permeability 491, Alloy 47-50)

A soft magnetic alloy, consisting of 49% Nickel, balance Iron used where high initial permeability, maximum permeability, and low core loss is needed.

EFI Alloy 50 Products

Ed Fagan Inc. stocks EFI Alloy 50 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 50 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 50 to your exact specifications, and we also have tremendous versatility when it comes to custom sizes, packages, and unusual materials.

EFI Alloy 50 Rod

EFI Alloy 50 Rod Diameter

EFI Alloy 50 Rod Diameter

.250” EFI Alloy 50 Rod

1.062”EFI Alloy 50 Rod

.375” EFI Alloy 50 Rod

1.250”EFI Alloy 50 Rod

.412”EFI Alloy 50 Rod

1.375” EFI Alloy 50 Rod

.500” EFI Alloy 50 Rod

1.4375”EFI Alloy 50 Rod

.625” EFI Alloy 50 Rod

1.500” EFI Alloy 50 Rod

.750” EFI Alloy 50 Rod

1.750” EFI Alloy 50 Rod

1.000” EFI Alloy 50 Rod

2.000” EFI Alloy 50 Rod

1.030” EFI Alloy 50 Rod

4.000” EFI Alloy 50 Rod

 

EFI Alloy 50 Square Bar

EFI Alloy 50 Square Bar Width

EFI Alloy 50 Square Bar Width

1.030” EFI Alloy 50 Square Bar

2.030” EFI Alloy 50 Square Bar

1.780” EFI Alloy 50 Square Bar

 


High Permeability 49 Square Bar -- FM

High Permeability 49 Square Bar Width

High Permeability 49 Square Bar Width

1.781” High Permeability 49 Square Bar

2.440” High Permeability 49 Square Bar

2.031” High Permeability 49 Square Bar

 

 

EFI Alloy 50 Strip/Coil Annealed

EFI Alloy 50 Strip/Coil Thickness

EFI Alloy 50 Strip/Coil Thickness

.002” EFI Alloy 50 Strip/Coil

.025” EFI Alloy 50 Strip/Coil

.004” EFI Alloy 50 Strip/Coil

.030” EFI Alloy 50 Strip/Coil

.010” EFI Alloy 50 Strip/Coil

.032” EFI Alloy 50 Strip/Coil

.014” EFI Alloy 50 Strip/Coil

.040” EFI Alloy 50 Strip/Coil

.020” EFI Alloy 50 Strip/Coil

.050” EFI Alloy 50 Strip/Coil

 

EFI Alloy 50 Strip/Coil Rotor Grade

EFI Alloy 50 Strip/Coil Thickness

EFI Alloy 50 Strip/Coil Thickness

.007” EFI Alloy 50 Strip/Coil

.014” EFI Alloy 50 Strip/Coil

.010” EFI Alloy 50 Strip/Coil

 

 

Applications

Transformer cores, highly efficient motors, shielding, and specialized electronic devices, such as LF power transducers, chokes, relay parts, solenoids & oscillators.

EFI Alloy 50 Properties

 

EFI Alloy 50 Typical DC Magnetic Properties

Saturation Induction - Gausses

14,500

Maximum Permeability

100,000

Coercive Force - Oersteds

0.06

Coercive Force - A/m

4.77


EFI Alloy 50 Typical AC Magnetic Properties

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

N/A

B-40 Permeability @ 60Hz

6,500

 

N/A = not a typical application value


 

EFI Alloy 50 Physical Properties

Density

lb/cu in

0.295

Specific Gravity

 

8.18

Curie Temp

°F

840

 

°C

450

Melting Point

°F

2600

 

°C

1427

Electrical Resistivity

Micro-ohm-cm

49

 

ohm-cir mil/ft

290

Thermal Conductivity

W/cm °C

0.13

 

BTU-in/sq. ft-hr-

90

Specific Heat

Cal/g- °C

0.12

 

BTU/lbm- °F

0.12

Thermal Expansion

ppm / °F (75°F to 842°F)

5.0

 

ppm / °C (25°C to 450°F)

9.0


 

EFI Alloy 50 Mechanical Properties

Tensile Strength

ksi

75

 

MPa

518

Yield Strength

ksi

23

 

MPa

159

Elongation

% in 2 in.

40

Typical Hardness Ann.

Rockwell HRB

80

Modules of Elasticity

Mpsi

24

 

kMPa

166


EFI Alloy 50 Chemistry

maximum % unless noted

Iron

49

Nominal Nickel

50

Nominal Cobalt

--

Molybdenum

--

Carbon

0.02

Manganese

0.5

Silicon

0.35

Vanadium

--

Niobium

--

Phosphorus

--

Sulfur

--


EFI Alloy 50 Specifications

ASTM A753

MIL N-14411

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