1J38 Soft Magnetic Alloy Strip Low Coercivity High Magnetic Permeability

1J38 Soft Magnetic Alloy Strip: Low Coercivity, High Magnetic Permeability, and High Saturation Magnetic Induction, Exhibiting Stable Magnetic Performance over the –40 °C To 60 °C Temperature Range

Product Description

1J38 Soft Magnetic Alloy Strip is an advanced nickel‑iron‑chromium precision strip engineered for temperature‑compensated electromagnetic components. With 38 wt % nickel and 13 wt % chromium, this strip delivers high initial permeability, low hysteresis loss, and a tailored Curie temperature for compensation applications. Its near‑zero thermal expansion ensures dimensional integrity from –50 °C to +150 °C—ideal for South Asia’s humid climates, Southeast Asia’s tropical environments, the arid Middle East, Europe’s precision instrumentation, and North/South America’s automotive and aerospace control systems. Engineered via cold‑rolled processing, the 1J38 strip offers tensile strength up to 600 MPa, yield strength around 450 MPa, and elongation above 25%, supporting fine stamping and winding. Exceptional corrosion resistance in moisture, saline, and hydrazine media preserves magnetic performance in harsh environments. Conforming to GB/T 15005‑1994 and GB/T 15018‑1994 standards, this strip delivers consistent magnetic and mechanical properties. Additionally, its optimized electrical resistivity of 0.44 Ω·mm²/m and thermal conductivity of ~44 W/m·°C reduce eddy‑current losses and facilitate thermal management in high‑frequency transformers and inductors. 

Chemical Composition of 1J38 Soft Magnetic Alloy Strip

Mechanical Properties of 1J38 Soft Magnetic Alloy Strip

Physical Parameters of 1J38 Soft Magnetic Alloy Strip

Standards Compliance for 1J38 Soft Magnetic Alloy Strip

Key Features of 1J38 Soft Magnetic Alloy Strip

• High Initial Permeability & Low Coercivity: Ensures efficient magnetic flux control and minimal core losses.

• Tailored Curie Temperature: Designed for precise temperature‑compensation elements in electromagnetic and permanent‑magnetic circuits.

• Near‑Zero Thermal Expansion: Maintains dimensional stability across –50 °C to +150 °C.

• Optimized Electrical Resistivity & Thermal Conductivity: Reduces eddy‑current losses and improves heat dissipation in high‑frequency applications.

• Superior Mechanical Strength: Tensile up to 600 MPa and elongation > 25% for reliable stamping and forming.

• Excellent Corrosion Resistance: Stable in moisture, saline, and hydrazine environments.

Applications of 1J38 Soft Magnetic Alloy Strip

• Temperature‑Compensation Coils in electromagnetic and permanent‑magnetic circuits

• Magnetic Shunt & Divider Elements for precision meters and sensors

• Magnetic Shielding in medical imaging and electronic enclosures

• Compensation & Balance Coils in power transformers and inductors

• Precision Relays, Chokes & Pulse Transformers in automotive and aerospace control systems

• Sensors & Transducers for communication, metering, and instrumentation

FAQ: 1J38 Soft Magnetic Alloy Strip

Q1: What are the standard strip dimensions for 1J38?
A1: Typical thicknesses range from 0.05 mm to 2.0 mm, widths from 10 mm to 200 mm. Custom sizes are available upon request.

Q2: How is 1J38 strip heat‑treated to optimize magnetic properties?
A2: Annealing at 850–950 °C in a hydrogen or vacuum furnace, followed by controlled cooling, refines grain structure and maximizes permeability.

Q3: Which environments can 1J38 withstand?
A3: Resistant to corrosion in high‑humidity, saline, and hydrazine atmospheres; stable magnetic performance from –50 °C to +150 °C.

Q4: How should 1J38 strip be packaged for shipment?
A4: Wrapped in moisture‑proof paper, sealed in anti‑corrosion film, and secured on wooden pallets to prevent deformation and oxidation.

Q5: What industries benefit most from 1J38 strip?
A5: Power generation, electronics, automotive, aerospace, medical devices, and precision instrumentation leverage its stability and performance.