Ed Fagan (EFI) Alloy 50 is a soft magnetic alloy typically used in applications where high initial permeability, maximum permeability and low core loss is needed. The tables below contain the typical DC and AC magnetic properties for EFI Alloy 50. Also, you will find EFI Alloy 50’s typical physical, mechanical, chemistry data for analysis, including references to the specifications that apply to this alloy.
To download your copy of the EFI Alloy 50 data sheet or any of the Ed Fagan Soft Magnetic Alloys we supply, please go to the Data Sheets section in our Technical Library.
If you have any questions or concerns about the properties of this alloy for your next application, please contact us at 800-348-6268. Our sales team will gladly assist you.
EFI Alloy 50 Typical DC Magnetic Properties |
||
|---|---|---|
| PROPERTIES | BAR | STRIP (0.014") |
| Initial Permeability B100 | 6,500 | 12,000 |
| Maximum Permeability | 75,000 | 150,000 |
| Coercive Force - (Hc)1 /Oersted | 0.04/0.07 | 0.05/0.06 |
| Saturation Inductance (G)2 | 15,000 | 15,000 |
| 1 From 10,000 gausses; 2 From H-100 oersteds | ||
| Source: Carpenter Electrification High Permeability 49 Data Sheet v. 5/20. | ||
EFI Alloy 50 Typical AC Magnetic Properties |
|
|---|---|
| Minimum 60 Hz AC Permeability B40 | 8,000 |
| Rotor Grade 0.014 IN Thickness | |
| All magnetic testing was performed in accordance with applicable ASTM specification. Please refer to appropriate specification for details. Procedures are product specific. | |
| Source: Carpenter Electrification High Permeability 49 Data Sheet v. 5/20 |
|
EFI Alloy 50 Typical Physical Properties | ||
|---|---|---|
| Density | lb/cu in | 0.295 |
| Specific Gravity | 8.18 | |
| Curie Temp | °F | 860-930 |
| °C | 460-499 | |
| Melting Point | °F | 2600 |
| °C | 1427 | |
| Electrical Resistivity | ohm-cir mil/ft | 290 |
| Microhms-cm | 48 | |
| Thermal Conductivity | BTU-in/sq. ft-hr-°F | 90.2 |
| W/ . K | 13 | |
| Mean Specific Heat | BTU/lb/ °F | 0.12 |
| J/kg . K | 502.41 | |
| Thermal Expansion | ppm /°F (75°F to 842°F) | 5.0 |
| ppm /°C (25°C to 450°C) | 9.0 | |
| Source: ASTM A753 | Carpenter Electrification High Permeability 49 Data Sheet v. 5/20 | ||
EFI Alloy 50 Typical | ||
|---|---|---|
| Tensile Strength | ksi | 75 |
| MPa | 518 | |
| Yield Strength | ksi | 23 |
| MPa | 159 | |
| Elongation | % in 2 in. | 40 |
| Typical Hardness Ann. | Rockwell HRB | 80 |
| Modulus of Elasticity | ksi | 24 |
| MPa | 166 | |
| Source: ASTM A753 | ||
EFI Alloy 50 Chemistry | ||
|---|---|---|
| Nickel | 47.0-49.0 | |
| Manganese, max | 0.80 | |
| Silicon, max | 0.50 | |
| Phosphorus, max | 0.03 | |
| Sulfur, max | 0.01 | |
| Chromium, max | 0.30 | |
| Molybdenum, max | 0.30 | |
| Cobalt, max | 0.50 | |
| Copper, max | 0.30 | |
| Iron | Balance | |
| Source: ASTM A753 Table 2 Alloy 2 | ||
EFI Alloy 50 Specifications | ||
|---|---|---|
| ASTM A753 | MIL N-14411 | UNS K94840 |
For additional information on specifications of the materials distributed by Ed Fagan, please visit the websites of the international organizations that develop and publish technical standards: ASTM International and ASM International.
Ed Fagan is the leading supplier of soft magnetic alloys since 1965. Depend on us for quality, mill-certified materials, competitive pricing and stock items that can ship within 24-hours of your order confirmation.