Ultra-High Magnetic Permeability 1J50 Wire FeNi50 Nickel Iron Alloy Wire with Low Core Loss and Tight Diameter Tolerance

DLX specializes in manufacturing premium-grade 1J50 nickel-iron soft magnetic alloy wire (FeNi50), engineered specifically for high-efficiency electromagnetic devices, precision relays, sensitive transformers, and high-frequency inductor components. Featuring an optimal 50% nickel composition, our 1J50 wire exhibits exceptional initial permeability, maximum magnetic flux density, and ultra-low coercivity. Manufactured through advanced Vacuum Induction Melting (VIM) and proprietary hydrogen atmosphere annealing, DLX delivers consistent magnetic performance and tight dimensional tolerances for global OEM and Tier-1 electronics manufacturers.

1J50 is a binary nickel-iron soft magnetic alloy containing approximately 49.0% to 51.5% nickel with iron balance. It combines high saturation magnetic induction (Bs≈1.50–1.60 T) with outstanding magnetic permeability and low core loss in moderate magnetic fields.

Our industrial 1J50 wire is produced under strict metallurgical control to ensure ultra-low carbon, sulfur, and gaseous inclusions. Available in bright annealed, light-drawn, or semi-hard tempers, DLX 1J50 wire provides superior winding ductility, smooth surface finishes, and zero-defect performance in high-speed automated winding and micro-relay assembly operations.

• Wire Diameter Range: 0.05 mm to 6.00 mm (Ultra-fine micro wire to heavy coil wire)
• Dimensional Tolerance: Up to ±0.002 mm (Custom ultra-precision grading)
• Supply Tempers: Soft Annealed (M), Light Cold Drawn (Y4), Hard Drawn (Y)
• Packaging Options: Precision DIN Spools (DIN 100 / DIN 125 / DIN 160 / DIN 200), Coils with protective vacuum packaging

The optimized 50% nickel balance provides an ideal hysteresis loop with rapid magnetic saturation and minimal residual magnetization, ensuring millisecond-level response in sensitive relay armatures and fast-switching inductors.

Refined grain structure achieved through multi-stage cold drawing and clean vacuum degassing drastically minimizes eddy current and hysteresis losses during electromagnetic cycles, enhancing device energy efficiency.

Laser micrometer online monitoring ensures continuous roundness and gauge precision along the entire wire length. Smooth, mirror-like, defect-free surfaces prevent wire breakage and coil jamming during automated high-speed winding.

With a Curie point of 500°C and stable magnetic retention across variable operating temperatures, our 1J50 wire supports tight bending, micro-welding, and deep-drawing without surface cracking or mechanical degradation.

• Precision Magnetic Relays: Miniature communication relays, automotive DC relays, safety switches, and latching relay cores.
• Inductors & Choke Coils: High-permeability toroidal chokes, power inductor windings, and filter cores for power electronics.
• Current & Pulse Transformers: Precision instrument transformers, current sensors, and high-frequency pulse transformer components.
• Electromagnetic Shielding & Flux Concentrators: Micro-magnetic shielding braids, sensor flux collectors, and low-frequency noise suppressors.
• Aviation & Industrial Instrumentation: Sensitive galvanometer components, navigation magnetic sensors, and high-precision transducer cores.

• Full-Chain Metallurgical Control: Complete in-house manufacturing process from Vacuum Induction Melting (VIM), Electroslag Remelting (ESR), hot rolling, precision cold drawing, to specialized hydrogen atmosphere continuous annealing.
• 1,200 Tons Monthly Capacity: Robust volume manufacturing capability ensuring prompt delivery for continuous OEM production schedules and large-scale industrial projects.
• Batch-to-Batch Magnetic Consistency: Every batch undergoes comprehensive 100% spectral chemical verification, mechanical tensile testing, and DC/AC magnetic flux loop analysis.
• Customized Engineering Solutions: Tailored wire diameters, bespoke temper levels, spooling specifications, and expert heat-treatment consultation to meet your exact assembly demands.

A: 1J50 has higher saturation magnetic induction (Bs≈1.55 T vs. 0.75 T for 1J85) and can operate under stronger magnetic fields without premature saturation. 1J85 provides higher initial and maximum permeability in very weak fields. 1J50 is ideal for power inductors, relays, and transformers where moderate to high magnetic flux density is required.

A: For optimal magnetic permeability and minimum coercivity, components fabricated from 1J50 typically require final magnetic annealing in a pure dry hydrogen or high-vacuum atmosphere (typically at 1100°C–1150°C followed by controlled cooling). DLX can supply pre-annealed soft wire for light winding or provide precise technical guidance on post-processing heat treatment.

A: DLX supports flexible order quantities configured dynamically according to specific wire diameters, tempers, and spooling requirements. Products are packaged on standard DIN spools or coiled with multi-layer anti-oxidation wrapping to ensure safe global transit.

A: We use high-precision diamond dies and real-time dual-axis laser diameter measurement systems during fine drawing, maintaining diameter tolerances as tight as ±0.002 mm with uniform roundness across continuous master spools.