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Soft Magnetic Alloys

Fe50Ni50 Soft Magnetic Alloy

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

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The High-Flux Standard for Magnetic Precision

This specialized soft magnetic alloy combines high saturation induction with exceptional permeability to ensure maximum efficiency in electromagnetic systems.

Ingot Manufacturing Process

Fe50Ni50 ingots are manufactured in-house via the Vacuum Induction Melting (VIM) process using virgin raw materials and trace element controls.

RFQ from Customer

We start with customer-specific batch inputs and target compositions, adjusting for custom geometry and magnetic behavior.

Alloy Design/Planning

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.

Alloy Melting by VIM

Virgin elements are charged into the VIM furnace either in air or under vacuum, with precise adjustments made for trace element additions during melting.

Process & Quality Control

The melt is poured under vacuum into precision-engineered molds using an automatic tilting mechanism for defect-free solidification.

Primary Finishing

Post-casting processes include surface treatment, cropping, and preparation of ingots for downstream processing.

Testing & Packaging

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)

Technical Specifications

ElementRange (wt%)
Nickel49.00 – 50.50
Carbon0.00 – 0.030
Silicon0.15 – 0.30
Manganese0.30 – 0.60
Phosphorous0.00 – 0.020
Sulphur0.00 – 0.020
IronBalance
Oxygen0.00 – 0.010
Nitrogen0.00 – 0.010

Properties

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 CastAfter Heat Treatment
Vickers Hardness203 HV-
UTS (MPa)780 MPa-
Yield Strength--
Young’s Modulus--
Elongation--

Process Capability

Ensuring material integrity with 100% PMI testing via our precise XRF analyser.

Input: Batch SizeOutput FormAlloying ElementsChemistry ToleranceImpurity Levels
30 kg to 600 kgIngot as per customer specSi

+/- 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

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High-Saturation Alloy for High-Performance Magnetics

Fe50Ni50 is a specialized nickel-iron soft magnetic alloy that combines high magnetic flux density with exceptional permeability and corrosion resistance.

Benefits

With over six decades of expertise, PML delivers high-performance component technologies and precision solutions trusted across critical industries.

1

Flexible batch sizes

2

Consistent, reproducible high quality

3

Minimal gas impurity levels

4

Evaporation of volatile non-ferrous impurities (Sn, Zn, Pb, Sb)

5

Reduced non-metallic inclusions

6

Ready-to-use ingots for powder metallurgy (MIM), strip production, rolling, forging, etc.

Applications

Fe50Ni50 Soft Magnetic Alloy is engineered for both magnetic performance and environmental resilience, ideal for:

1

Transformer cores

2

Relays and magnetic chokes

3

Small motors

4

Marine components and offshore structures

5

Electromagnetic shielding in sensitive electronics

6

Aerospace and automotive engine parts

7

Alloying agent for corrosion-resistant steels

Trust, Reliability & Quality

With over six decades of expertise, PML delivers high-performance component technologies and precision solutions trusted across critical industries.

ISO 45001

ISO 45001

Occupational Health and Safety (OH&S) management systems

ISO 14001

ISO 14001

Environmental Management Systems (EMS)

ISO 9001

ISO 9001

Quality Management Systems (QMS)

IATF 16949

IATF 16949

International Standard for Automotive Management Systems

AS 9100

AS 9100

Aerospace Quality Management System (QMS)

Frequently Asked Questions

Fe50Ni50 is ideal for electromagnetic applications requiring high saturation, such as transformer cores, relays, motors, and EMI shielding.

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