Alloy 50

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Description

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.

Alloy 50 Specifications
ASTM A753 MIL N-14411
 

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

 

Alloy 50 Properties

 

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

 

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

 

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

 

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

 

Alloy 50 Rod
 Alloy 50 Rod Diameter Alloy 50 Rod Diameter
.250”  Alloy 50 Rod 1.062” Alloy 50 Rod
.375”  Alloy 50 Rod 1.250” Alloy 50 Rod
.412” Alloy 50 Rod 1.375”  Alloy 50 Rod
.500”  Alloy 50 Rod 1.4375” Alloy 50 Rod
.625”  Alloy 50 Rod 1.500”  Alloy 50 Rod
.750”  Alloy 50 Rod 1.750”  Alloy 50 Rod
1.000”  Alloy 50 Rod 2.000”  Alloy 50 Rod
1.030”  Alloy 50 Rod 4.000”  Alloy 50 Rod

 

Alloy 50 Square Bar
EFI Alloy 50 Square Bar Width EFI Alloy 50 Square Bar Width
1.030”  Alloy 50 Square Bar 2.030”  Alloy 50 Square Bar
1.780”  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  

 

 

Alloy 50 Strip/Coil Annealed
EFI Alloy 50 Strip/Coil Thickness EFI Alloy 50 Strip/Coil Thickness
.002”  Alloy 50 Strip/Coil .025”  Alloy 50 Strip/Coil
.004”  Alloy 50 Strip/Coil .030”  Alloy 50 Strip/Coil
.010”  Alloy 50 Strip/Coil .032”  Alloy 50 Strip/Coil
.014”  Alloy 50 Strip/Coil .040”  Alloy 50 Strip/Coil
.020”  Alloy 50 Strip/Coil .050”  Alloy 50 Strip/Coil

 

 

Alloy 50 Strip/Coil Rotor Grade
Alloy 50 Strip/Coil Thickness Alloy 50 Strip/Coil Thickness
.007”  Alloy 50 Strip/Coil .014”  Alloy 50 Strip/Coil
.010”  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.