Core Insights - The article focuses on the material parameters of 1J80 precision soft magnetic nickel alloy tubing, emphasizing its stability and adaptability in magnetic components [1][4]. Material Composition - The chemical composition of 1J80 consists of Ni 78–82% and Fe 18–22%, with trace elements like Si, Mn, and Cu adjusted according to processing formulas [3][4]. Magnetic Performance - The magnetic permeability (μr) can be observed in the range of 8000–12000 at room temperature, with low hysteresis loss and good stability at low frequencies [3][4]. - The coercivity (Hc) fluctuates in low magnetic fields, while the saturation magnetic flux density (Bs) is approximately 0.8–1.0 T, varying with grain size and annealing state [3][4]. Mechanical and Geometric Properties - The tubing has an outer diameter ranging from 6 to 50 mm and a wall thickness of 0.5 to 2.5 mm, with surface roughness meeting process requirements to minimize magnetic losses [3][4]. Heat Treatment - Key heat treatment involves annealing at temperatures around 900–1000°C in a nitrogen-hydrogen or neutral atmosphere, with a hold time of 1–2 hours followed by slow cooling to achieve uniform grain structure and reduce residual stress [5]. Processing and Surface Treatment - Post-extrusion or rolling, re-heat treatment is necessary to control grain growth, and ordered surface treatment can reduce magnetic losses caused by microscopic defects [5]. Standards and Quality Control - The article references ASTM E1444/E1444M for non-destructive testing and AMS 2750D for aerospace heat treatment and temperature control standards, which should be followed during material processing [5]. - Non-destructive testing should be employed to eliminate defects, cracks, and surface imperfections to ensure consistent magnetic permeability within the design range [5]. Cost Structure - The cost of 1J80 is influenced by LME (London Metal Exchange) pricing and domestic market trends from sources like Shanghai Nonferrous Metals Network, providing a comprehensive view of material procurement and process cost fluctuations [5].