High Permeability 1J79 Precision Alloy Strip For Magnetic Shielding Applications

Product Description:

Overview
1J79 soft magnetic alloy strip is a high-permeability precision alloy designed for use in magnetic shielding, transformers, sensors, and high-frequency inductors. With a typical composition of approximately 79% nickel, this alloy exhibits excellent magnetic properties, including high initial permeability, high maximum permeability, and low coercive force.

Key Features

• Exceptional soft magnetic performance

• High magnetic permeability (μ max > 80,000)

• Excellent DC and AC magnetic performance

• Stable performance under low magnetic fields

• Easy to form and process into various shapes

• Strong resistance to thermal and mechanical stress

Technical Principle
The 1J79 alloy operates by aligning its magnetic domains efficiently in response to external magnetic fields. The high nickel content minimizes magnetostriction and eddy current loss, making it ideal for AC applications and environments requiring precise magnetic control. Its low coercive force enables rapid magnetic switching, improving signal clarity and sensor responsiveness.

Applications

• Magnetic shielding for electronic and medical equipment

• Transformers and current sensors

• Pulse transformers and chokes

• Magnetic amplifiers

• Electric meters and relays

• Audio equipment and magnetic field detection systems

Specifications Table

• Superior shielding against low-frequency magnetic fields

• Excellent processability for laminations or coils

• High reproducibility and stable magnetic performance

• Cost-effective compared to other magnetic alloys

• Widely recognized in aerospace, electronics, and instrumentation

FAQ

Q1: What is the minimum thickness of 1J79 strip you can provide?
A1: The minimum thickness we offer is 0.05mm, ideal for precision magnetic applications.

Q2: Is 1J79 suitable for electromagnetic interference shielding?
A2: Yes, due to its high permeability and low coercivity, it’s ideal for EMI shielding.

Q3: How should 1J79 be heat-treated for best performance?
A3: A hydrogen annealing treatment at 1100°C followed by slow cooling can optimize its magnetic properties.