1J79 Permalloy Flat Wire is a high-performance soft magnetic nickel-iron alloy ribbon containing approximately 79% nickel and a small amount of molybdenum. It is specially designed for applications requiring excellent magnetic permeability, low coercive force, and outstanding magnetic shielding performance. Compared with round wire, the flat structure provides a larger surface area, better magnetic flux distribution, and improved efficiency in precision electromagnetic applications.

After vacuum or hydrogen annealing, 1J79 flat wire exhibits extremely high initial permeability, low hysteresis loss, and stable magnetic properties, making it ideal for high-precision electronic and electromagnetic components. The material also offers excellent dimensional accuracy, smooth surface finish, and good flexibility for winding and forming processes.

Our 1J79 flat wire is manufactured with strict quality control to ensure consistent composition, uniform thickness, and reliable performance. It is available in customized widths, thicknesses, and lengths according to customer requirements.

1. Chemical Composition:

2. Technical Specifications:

3. Production Attributes

4.Applications

• Micro magnetic shielding parts for sensors, probes and weak signal modules
• Miniature high-precision transformers & low-loss low-frequency inductors
• Medical electronic instruments and diagnostic sensing components
• Aerospace navigation, aviation control electromagnetic assemblies
• Communication equipment anti-electromagnetic interference shielding coils
• Precision measuring instruments, fluxgate magnetometer windings
• Compact electromagnetic coils with limited winding space

5.Key features

• High nickel-molybdenum composition (~79% Ni) with ultra-high initial permeability
• Extremely low coercive force and tiny hysteresis loss, stable soft magnetic performance
• Outstanding electromagnetic shielding capacity to block weak signal interference
• Flat cross-section design for denser winding and uniform magnetic flux distribution
• Precise dimensional tolerance, uniform thickness and smooth wire surface
• Excellent ductility and flexibility, easy to wind, bend and form into tiny coils
• Obtain optimal magnetic properties after vacuum or hydrogen annealing treatment
• Strict batch quality control with consistent chemical composition
• Customizable width, thickness and cutting length for diverse project demands