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Soft Magnetic Alloys: Physical & Mechanical Properties, and Specifications

 

Physical Properties

EFI Alloy Type

Units

EFI 79

EFI 50

EFI Cobalt 50

EFI Core Iron

Density

lb/cu in

.316

.295

.295

.284

 

gm/cc

8.74

.316

8.20

7.86

Curie Temp

°F

860

840

1710

1400

 

°C

460

450

932

760

Electrical Resistivity

Micro-ohm-mm

580

480

420

130

 

ohm-cir mil/ft

349

290

253

79

Thermal Conductivity

W/cm °K

19

13

--

73

 

BTU-in/hr-sq.ft-°F

134

90

--

500

Specific Heat

J/gm- °K

0.5

0.5

--

0.45

 

BTU/lb- °F

0.12

0.12

--

0.11

Coefficient of Thermal Expansion

micro-in.in- °F (75°F to 750°F)

7.4

4.6

5.61

8.1

 

micro-cm/cm- °C (25°C to 450°F)

13.3

8.3

10.1

14.5

 

Mechanical Properties (typical)

EFI Alloy Type

Units

EFI 79

EFI 50

EFI Cobalt 50

EFI Core Iron

Tensile Strength

KSI

80

75

120

30

 

MPa

552

517

827

207

Yield

KSI

28

23

60

45

 

MPa

195

154

413

310

Elongation

% in 2"

30

30

8

40

 

Applicable Specifications

EFI Alloy Type

EFI 79

EFI 50

EFI Cobalt 50

EFI Core Iron

EFI Vac Iron

UNS (1)

K14080

K94840

R30005

--

--

ASTM

A753

A753

A801

A848

A848

AMS (2)

N-14411C

N-14411C

11

--

--


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

 

Soft Magnetic Alloys

Ed Fagan Europe Ltd. stocks a variety of soft magnetic alloys for wide range of applications. EFI carries:
EFI Alloy 79
EFI 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