Permalloy alloy ribbons are precision-manufactured soft magnetic materials composed primarily of nickel and iron, offering high magnetic permeability and extremely low coercivity. These ribbons are widely used in magnetic shielding, transformer and inductor cores, pulse transformers, and EMI suppression due to their superior magnetic characteristics and stable performance.

Designed through advanced cold-rolling or rapid solidification techniques, permalloy ribbons maintain excellent surface finish, dimensional consistency, and magnetic uniformity. Their low core loss and high saturation flux density make them suitable for high-frequency and low-noise applications in power electronics, medical devices, telecommunications, aerospace, and industrial automation.

Permalloy alloy ribbons are available in various grades and surface treatments, including annealed and vacuum heat-treated finishes. Custom widths and thicknesses can be supplied to meet specific requirements for winding, slitting, or lamination.

 Features

• High magnetic permeability for sensitive applications

• Low coercivity and core loss in alternating magnetic fields

• Effective magnetic shielding material

• Available in annealed and non-annealed forms

• Excellent dimensional stability and surface finish

• Suitable for high-frequency transformer cores

• Available in strips, coils, and custom-cut forms

Technical Specifications

• Material composition: Nickel ≈ 80%, Iron ≈ 20%

• Maximum permeability: ≥ 100,000

• Coercivity: Less than 0.3 A/m

• Saturation magnetic flux density: 0.8 – 1.0 Tesla

• Thickness range: 0.01 mm to 0.2 mm

• Width range: 3 mm to 100 mm

• Operating frequency: Up to several MHz depending on application

• Heat treatment: Hydrogen or vacuum annealed (optional)

• Conforms to ASTM A753, IEC 60404, JIS C2531 standards

Applications

• Electromagnetic shielding in electronic assemblies

• Toroidal and wound transformer cores

• Magnetic amplifiers and chokes

• EMI suppression in industrial and consumer electronics

• Medical and aerospace instrumentation

• Signal transformers and high-precision magnetic circuits

Permalloy alloy ribbons are essential for industries requiring precision magnetic materials that deliver consistent and efficient performance. Their adaptability, reliability, and compliance with international standards make them a trusted choice for electrical and electronic component manufacturers.