Soft Magnetic Alloys
High-saturation, soft magnetic alloy with superior corrosion resistance for demanding magnetic and marine applications.


This specialized soft magnetic alloy combines high saturation induction with exceptional permeability to ensure maximum efficiency in electromagnetic systems.
Fe50Ni50 ingots are manufactured in-house via the Vacuum Induction Melting (VIM) process using virgin raw materials and trace element controls.
We start with customer-specific batch inputs and target compositions, adjusting for custom geometry and magnetic behavior.
As per customer requirement mould design carried out and planned for charge preparation, charge sequences in VIM furnace. Careful selection of raw materials are the prime factor to achieve specified chemistry of an alloy. Trace alloying elements like Si and Mn are charged under full vacuum without breaking the melt integrity, ensuring homogeneous mixing.
Virgin elements are charged into the VIM furnace either in air or under vacuum, with precise adjustments made for trace element additions during melting.
The melt is poured under vacuum into precision-engineered molds using an automatic tilting mechanism for defect-free solidification.
Post-casting processes include surface treatment, cropping, and preparation of ingots for downstream processing.
Every batch is tested for chemical composition by Spark- OES / wet analysis / Gas analysis, and physical compliance as per customer specification before secure packaging.
Chemical Composition (Typical Range)
| Element | Range (wt%) |
|---|---|
| Nickel | 49.00 – 50.50 |
| Carbon | 0.00 – 0.030 |
| Silicon | 0.15 – 0.30 |
| Manganese | 0.30 – 0.60 |
| Phosphorous | 0.00 – 0.020 |
| Sulphur | 0.00 – 0.020 |
| Iron | Balance |
| Oxygen | 0.00 – 0.010 |
| Nitrogen | 0.00 – 0.010 |
Fe50Ni50 delivers a saturation magnetization of 1.6T, superior to most silicon-iron alloys, with exceptional incremental permeability across a wide range of polarizing fields.
| Mechanical Properties* | As Cast | After Heat Treatment |
|---|---|---|
| Vickers Hardness | 203 HV | - |
| UTS (MPa) | 780 MPa | - |
| Yield Strength | - | - |
| Young’s Modulus | - | - |
| Elongation | - | - |
Ensuring material integrity with 100% PMI testing via our precise XRF analyser.
| Input: Batch Size | Output Form | Alloying Elements | Chemistry Tolerance | Impurity Levels |
|---|---|---|---|---|
| 30 kg to 600 kg | Ingot as per customer spec | Si | +/- 0.5 % for Higher level % (Above 2 digit) and +/- 0.3 % for lower level % (Single digit) | Oxygen < 25ppm Hydrogen < 3ppm Nitrogen < 50ppm All other impurities < 50 ppm |

Fe50Ni50 is a specialized nickel-iron soft magnetic alloy that combines high magnetic flux density with exceptional permeability and corrosion resistance.
With over six decades of expertise, PML delivers high-performance component technologies and precision solutions trusted across critical industries.
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Fe50Ni50 Soft Magnetic Alloy is engineered for both magnetic performance and environmental resilience, ideal for:
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With over six decades of expertise, PML delivers high-performance component technologies and precision solutions trusted across critical industries.

ISO 45001
Occupational Health and Safety (OH&S) management systems

ISO 14001
Environmental Management Systems (EMS)

ISO 9001
Quality Management Systems (QMS)

IATF 16949
International Standard for Automotive Management Systems

AS 9100
Aerospace Quality Management System (QMS)
Fe50Ni50 is ideal for electromagnetic applications requiring high saturation, such as transformer cores, relays, motors, and EMI shielding.

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High-saturation magnetic alloy for precision applications in motors, sensors, actuators, and aerospace components.

High-permeability soft magnetic alloy with excellent EMI shielding and corrosion resistance for advanced electronic and power applications.
Pioneering cutting-edge technology to develop reliable, high-performance magnetic components and engineering solutions.