NILOMAG Alloy 77 – properties, applications and technical data
NILOMAG Alloy 77 is a soft magnetic nickel-iron-copper-molybdenum alloy with extremely high initial permeability.
The alloy is developed for applications where very high magnetic sensitivity is required while power losses must be kept to a minimum.
Alloy 77 is often used in transformers, inductors and other electronic components where stable magnetic properties are crucial.
Properties of NILOMAG Alloy 77
NILOMAG Alloy 77 belongs to the family of soft magnetic nickel-iron alloys and is particularly known for its very high magnetic permeability and low coercivity.
The alloy is often used in precision components and electromagnetic systems where low energy loss and high magnetic response are important properties.
- Type: soft magnetic nickel-iron alloy
- Alloy: Ni-Fe-Cu-Mo
- Structure: austenitic nickel-iron alloy
- Designations: NILOMAG 77, Alloy 77, Permalloy 77, high permeability Ni-Fe alloy
- Typical composition: Ni ~77%, Fe ~balance, Cu ~5%, Mo ~4%
Advantages
- Extremely high initial magnetic permeability
- Very low coercivity
- Low magnetic energy losses
- High magnetic stability
- Suitable for precision magnetic components
Limitations
- Lower mechanical strength than structural alloys
- Magnetic properties are affected by heat treatment and machining
- Not designed for high mechanical loads
Common product forms for Alloy 77
- Strip and sheet
- Round bar
- Wire
- Core material for magnetic components
- Special dimensions according to drawing
Typical components manufactured in Alloy 77
- Transformers
- Inductors
- Magnetic amplifiers
- Coupling devices
- Magnetic shields
- Tape heads
- Memory storage devices
Magnetic properties
NILOMAG Alloy 77 has an extremely high initial permeability and very low coercivity.
This makes the alloy particularly suitable in electromagnetic components where high magnetic response and low energy loss are crucial.
Environments where Alloy 77 performs well
- Electronic components
- Transformers and inductors
- Magnetic screens
- Precision instruments
Environments to avoid
- Applications with high mechanical stress
- Environments where structural strength is more important than magnetic properties
Technical data
| Density |
~8.7 g/cm³ |
| Magnetic permeability |
very high |
| Coercivity |
very low |
| Electrical resistivity |
~0.6 µΩ·m |
| Modulus of elasticity |
~200 GPa |
With a global network of suppliers, we can offer NILOMAG Alloy 77 in technical dimensions for demanding electromagnetic applications.
Contact us for price, availability and technical advice.
Supplier of Alloy 77 with certified quality
HARALD PIHL is one of Europe's largest suppliers of special alloys, including soft magnetic nickel-iron alloys such as NILOMAG Alloy 77.
With over 100 years of experience in the metal industry, we deliver materials with full traceability and certification according to EN 10204 3.1 / 3.2 as well as relevant ASTM and ISO standards.
Cutting, testing and quality assurance are carried out in-house to ensure the right tolerances and fast global delivery for technically demanding projects.
- Europe's largest stock of nickel and titanium alloys
- Special alloys from stock
- ASTM / ISO standards
- Top quality for safety-critical applications
- Fast global delivery
- Full material certification (EN 10204 3.1 / 3.2)
- Over 100 years in the metal industry
- Nickel and titanium experts
