1J46 Soft Magnetic Alloy Strip (UNS K94600): Ultra‑High Initial Permeability and Superior Saturation Induction

Product Overview

1J46 Soft Magnetic Alloy Strip is a high‑performance nickel‑iron precision strip engineered for power and signal integrity in demanding electromagnetic applications. Containing approximately 46 wt % nickel balanced with iron, this alloy delivers exceptional initial permeability (μ_i > 12 000), high saturation induction (1.55 T), and low coercivity (< 5 A/m) for minimal core losses. Cold‑rolled to tight thickness tolerances (0.025–2.0 mm) and hydrogen‑annealed at 1150 °C, the strip achieves fine‑grained microstructure, tensile strength of 850–1100 MPa, and Vickers hardness of 220–300 HV. Its electrical resistivity of 0.45 Ω·mm²/m and thermal conductivity of 13–14 W/m·K reduce eddy‑current losses and improve heat dissipation. With a Curie temperature of 440 °C and a coefficient of thermal expansion of 8.85 × 10⁻⁶ /K, 1J46 Soft Magnetic Alloy Strip maintains dimensional stability and magnetic performance from –40 °C to +120 °C in South Asia’s humid tropics, the Middle East’s arid climates, Europe’s precision instruments, and the Americas’ automotive and aerospace sectors, delivering reliable performance in high‑frequency transformers, inductors, and magnetic shielding solutions.

1J46 Soft Magnetic Alloy Strip Chemical Composition

1J46 Soft Magnetic Alloy Strip Mechanical Properties

1J46 Soft Magnetic Alloy Strip Physical Parameters

1J46 Soft Magnetic Alloy Strip Standards Compliance

Key Features of 1J46 Soft Magnetic Alloy Strip

• High Initial Permeability (μ_i > 12 000) and Low Coercivity (< 5 A/m) for efficient flux control.

• Superior Saturation Induction up to 1.55 T minimizes core losses in dynamic applications.

• Optimized Electrical Resistivity (0.45 Ω·mm²/m) and Thermal Conductivity (13–14 W/m·K) reduce eddy‑current losses and enhance heat dissipation.

• Robust Mechanical Strength (850–1100 MPa tensile, 220–300 HV hardness) supports precise stamping and winding.

• Stable Magnetic Performance from –40 °C to +120 °C due to Curie temperature of 440 °C and low thermal expansion.

• Fine-Grained Microstructure via hydrogen annealing at 1150 °C for consistent magnetic and mechanical properties.

Applications of 1J46 Soft Magnetic Alloy Strip

1J46 Soft Magnetic Alloy Strip excels in:

• Inductive Components & Strip‑Wound Cores

• Relay Parts & Pulse Transformers

• Measurement Transducers & Sensors

• Rotor & Stator Laminations

• Flux Conductors & Pole Pieces in Magnetic Valves

• Magnetic Shielding in Medical & Electronic Enclosures

Its performance in humid, saline, and hydrazine environments makes it ideal across South Asia, Southeast Asia, the Middle East, Europe, and the Americas.

FAQ: 1J46 Soft Magnetic Alloy Strip

Q1: What thickness and width are available?
A1: Standard thicknesses range from 0.025 mm to 2.0 mm, widths from 5 mm to 200 mm. Custom dimensions can be accommodated.

Q2: How is optimal magnetic performance achieved?
A2: Anneal in dry hydrogen (dew point < –40 °C) at 1150 °C for 5 h, then rapid cooling to refine grain structure.

Q3: What operating environments can 1J46 handle?
A3: Resistant to humidity, salt spray, and hydrazine; maintains stable magnetic properties from –40 °C to +120 °C.

Q4: How is 1J46 strip packaged?
A4: Wrapped in moisture‑barrier paper, sealed in anti‑corrosion film, and secured on pallets to prevent deformation.

Q5: Which industries benefit most?
A5: Power conversion, electronics, automotive, aerospace, medical imaging, and precision instrumentation leverage its low‑loss, high‑flux performance.