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Soft Magnetic Alloys

FeCo Alloy

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

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The Pinnacle of Magnetic Saturation

Our high-performance Iron-Cobalt alloys deliver the highest magnetic flux density available, enabling extreme power density and weight reduction.

Ingot Manufacturing Process

FeCo alloy ingots are produced using high-purity raw materials in Vacuum Induction Melting (VIM) furnaces to ensure precise composition and consistent magnetic performance.

RFQ from Customer

Production plans are tailored to meet the customer’s application and specification needs, including custom ingot geometries.

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.

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 Ranges)

Technical Specifications

ElementComposition Range (wt%)
Carbon0.00 – 0.01
Manganese0.00 – 0.05
Niobium0.00 – 0.01
Vanadium1.90 – 2.00
Cobalt48.50 – 50.00
IronBalance

Properties

Custom ingot shapes and batch sizes tailored to exact customer specifications.

PropertyPML FeCo Alloy (as cast)*After Heat Treatment*
Brinell Hardness (HB)≥190170–230
Ultimate Tensile Strength (UTS)345–480 MPa550–750 MPa
Yield Strength (YS)210–345 MPa-
Young’s Modulus (E)40%-
Elongation at Break--

*Typical values; dependent on processing conditions

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 kgCustom ingot shapeCo, V±0.5% (High %)
±0.3% (Low %)

Oxygen < 25ppm 

Hydrogen < 3ppm 

Nitrogen < 50ppm 

All other impurities  < 50 ppm

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Peak Magnetic Saturation Alloy

FeCo is a soft magnetic alloy primarily composed of cobalt and iron. It exhibits: Exceptional saturation magnetization, High permeability at elevated temperatures, Excellent magnetic flux conduction, thermal stability and corrosion resistance.

Applications

FeCo alloys are used in high-performance electromagnetic and structural components, especially where high magnetic saturation is needed:

1

Magnetic recording materials (hard drives, data storage)

2

Motors and actuators (aerospace, automotive)

3

Sensors and transducers (industrial and defense)

4

Magnetic shielding (EMI-sensitive equipment)

5

Military & space-grade magnetic assemblies

6

Electric propulsion systems

7

High-performance transformers and magnetic cores

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

Hiperco 50A is a proprietary version of a FeCo alloy with vanadium added for improved magnetic and mechanical properties. Our FeCo-V alloy is equivalent in performance and composition.

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