Description
Alloy 50 (aka Magnifer 502, Carpenter High Permeability 491, Alloy 4750)
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.
