Core Viewpoint - The 1J52 precision soft magnetic nickel alloy is a high-permeability Ni-Fe material designed for applications such as transformer cores, sensor drives, and small motor stators, with a focus on material parameters, processing, and testing standards under both national and international guidelines [1][3]. Material Composition - Chemical composition (approximate range): Ni 50–60%, Fe 40–50%, Cu ≤ 1%, Si ≤ 0.5%, C ≤ 0.05%, with trace amounts of Mn, P, and S [3]. - Magnetic properties (representative values in annealed state): Initial permeability μi typically ranges from 1.0×10^4 to 1.5×10^4, coercivity (Hc) in the tens of A/m, saturation magnetic induction Bs approximately 0.7–0.95 T, with magnetic loss more pronounced in high-frequency regions [3]. Thermal and Mechanical Properties - Thermal treatment and grain structure: Conventional annealing temperature range is 700–900°C, with argon protection and holding time of 1–2 hours to achieve high-density grain orientation, reducing residual stress and hysteresis loss [3]. - Mechanical properties: Tensile strength typically ranges from 300 to 450 MPa, elongation between 2–10%, and moderate hardness, facilitating stamping and winding processes [3]. Processing and Standards - Processing and welding: Suitable for thin sheet stamping and lamination, welding and bonding require compatible materials to avoid introducing significant stress [4]. - National standards: Adheres to GB/T series for chemical composition, thermal treatment processes, and magnetic performance testing, ensuring consistency in composition fluctuations and sample preparation [4]. - International standards: Incorporates ASTM/AMS style magnetic testing methods and thermal treatment guidelines, emphasizing the reproducibility of hysteresis loops, losses, and high-frequency characteristics in practical processes [4]. Market Insights - Market perspective: LME nickel spot prices and Shanghai Nonferrous Metals Network nickel price information serve as references for market sensitivity analysis, directly impacting material costs and process optimization [4]. - Data integration: Combines national standard test results with international methods to form stable process ranges and acceptance criteria, with μi and Bs combinations, residual magnetism, and loss curves being key references for core design [4]. Application Considerations - Application orientation: High permeability and low loss are not the only factors; temperature stability, mechanical processability, and assembly compatibility also determine final performance [4]. - Continuous optimization: The interplay of grain structure, residual stress, and trace elements remains a focal point for research and a potential direction for future performance enhancement [4].