1J50 Soft Magnetic Alloy Flat Wire / FeNi50 Permalloy Flat Strip High Magnetic Permeability Low Coercivity Precision Flat Wire Magnetic Material for Transformer Core Magnetic Shielding Relay Sensor

1J50 (FeNi50) soft magnetic alloy flat wire is a high-performance nickel-iron precision soft magnetic material containing approximately 50% nickel. It is characterized by excellent magnetic properties, including high magnetic permeability, low coercivity, and low hysteresis loss, making it suitable for high-efficiency electromagnetic applications.

Compared with round wire, 1J50 flat wire offers a larger surface area and better space utilization, which helps improve winding density and electromagnetic performance in compact devices. After proper vacuum or hydrogen annealing, the material exhibits significantly enhanced magnetic stability and reduced core losses.

1J50 flat wire also provides good electrical resistivity, helping to reduce eddy current losses in alternating magnetic fields. It features uniform thickness, stable dimensions, and excellent surface quality, ensuring reliable performance in precision magnetic components.

This material is widely used in transformers, inductors, relays, solenoids, electromagnetic shielding structures, sensors, and precision electronic and industrial control systems requiring stable magnetic performance and low energy loss.

1. Chemical Composition:

2. Technical  Specifications:

3. Production Attributes

4.Application

• High-efficiency transformers and wound core components
• nductors and high-frequency electromagnetic devices
• Relays, solenoids, and electromagnetic switch systems
• Precision sensor coils and magnetic detection elements
• Electromagnetic shielding structures for electronic devices
• Magnetic circuit components such as pole pieces and flux guides
• Miniaturized electromagnetic assemblies with high space utilization
• Industrial automation and control systems
• Aerospace and high-reliability electronic equipment
• Precision instruments requiring stable magnetic performance

5.Key features

• High magnetic permeability for efficient magnetic flux conduction
• Low coercivity for easy magnetization and demagnetization
• Low hysteresis loss for improved energy efficiency
• High saturation magnetic induction
• Excellent magnetic stability after vacuum or hydrogen annealing
• Good electrical resistivity to reduce eddy current losses
• Precision flat geometry with uniform thickness control
• Excellent surface quality and dimensional consistency
• Good cold working and forming performance
• Suitable for high-density winding and compact electromagnetic designs