FeNi50 Nickel Iron Alloy Wire China Supplier Precision Magnetic DLX Factory
Discover the FeNi50 Nickel Iron Alloy Wire, a premium soft magnetic precision alloy wire engineered for high-performance magnetic applications. As a trusted China supplier and DLX Factory direct manufacturer, we deliver top-quality 1J50 / FeNi50 high permeability nickel iron wire with exceptional saturation induction.
- Overview
- Specification
- Features & Applications
- FAQs
- Recommended Products
Product Introduction Overview
FeNi50 (also known as 1J50, Mu49, or Alloy 50) is a high-performance soft magnetic nickel iron alloy wire designed for demanding electromagnetic applications. Produced by DLX Factory, a leading China supplier of precision magnetic alloys, this FeNi50 wire delivers unmatched magnetic efficiency with a saturation induction of 1.55 T, maximum permeability reaching 60,000, and low coercive force (4.8-20 A/m).
With a density of 8.2-8.25 g/cm³, Curie temperature around 470-500°C, and electrical resistivity of 0.45 μΩ·m, our precision magnetic alloy wire ensures stable performance across a wide temperature range. As direct manufacturers in China, we specialize in high-quality FeNi50 soft magnetic wire for global export, offering superior low core loss and high saturation flux density compared to standard alloys. Perfect for engineers and OEMs seeking reliable China-sourced precision alloy wire.



Product Features
- Exceptional Magnetic Performance: Highest saturation induction (1.55 T) and maximum permeability up to 60,000 among iron-nickel alloys, with low coercive force for efficient soft magnetic applications.
- Precision Composition: 49-50.5% Nickel, balance Iron, plus controlled Si (0.15-0.3%) and Mn (0.3-0.6%) for optimal high permeability and low core loss.
- Thermal & Mechanical Stability: Curie point 470-500°C, density 8.2-8.25 g/cm³, tensile strength 450-780 MPa (annealed), elongation ≥35% – ideal for precision magnetic wire in high-induction environments.
- Custom Wire Forms: Available as spooled wire, rod, or custom diameters from DLX Factory China, with bright or oxidized surface for easy winding and fabrication.
- Reliable China Supplier Quality: ISO-certified production at DLX Factory ensures consistent soft magnetic nickel iron alloy wire with minimal impurities and export-ready packaging.
Product Applications
Our FeNi50 high permeability nickel iron alloy wire excels in:
- Small power transformers and chokes requiring high saturation induction and low core loss.
- Relays, magnetic circuit parts, and electromagnetic devices operating at elevated inductions with minimal bias.
- Laminated cores, magnetic shields, and precision instruments for electronics and aerospace.
- Inductors, sensors, and soft magnetic components in medical devices and industrial automation.
As a direct China manufacturer, DLX Factory supplies FeNi50 precision magnetic wire optimized for these high-performance applications, delivering superior efficiency and reliability worldwide.





Product FAQ
1.What is FeNi50 High Permeability Nickel Iron Alloy Wire and its key magnetic properties?
FeNi50 (1J50 soft magnetic alloy) is a 50% nickel-iron precision alloy wire with saturation induction of 1.55 T, maximum permeability up to 60,000, and low coercive force. It offers the highest flux density among similar iron-nickel alloys, making it ideal for soft magnetic applications.
2.Why choose DLX Factory China as your FeNi50 wire supplier?
DLX Factory is a trusted China manufacturer with 20+ years of experience in precision magnetic alloys. We provide factory-direct pricing, ISO-certified quality, custom wire specifications, and fast global shipping for wholesale buyers seeking reliable soft magnetic nickel iron alloy wire.
3.What are the main applications of FeNi50 soft magnetic precision alloy wire?
It is widely used in transformer cores, relays, chokes, magnetic shields, inductors, and electromagnetic devices where high permeability, low core loss, and high saturation induction are required.
4.What sizes and forms of FeNi50 magnetic wire are available from China supplier DLX?
We offer wire, rod, and spooled forms in custom diameters. Surface finishes include bright or oxidized – contact our China factory for precise specifications.
5.Does FeNi50 nickel iron alloy wire have good thermal stability?
Yes – with a Curie temperature of 470-500°C and excellent resistivity, it maintains stable magnetic performance in elevated-temperature precision applications.
6.How does FeNi50 compare to other permalloy or nickel iron wires?
FeNi50 provides the highest saturation induction (1.55 T) with balanced high permeability, outperforming lower-nickel variants in high-induction soft magnetic uses while remaining cost-effective from our DLX China factory.

