Wrought Iron-Chromium-Cobalt permanent magnet alloys (2J83, 2J84, 2J85) offer excellent deformability, machinability, and stable magnetic properties. Ideal for complex-shaped magnets, sensors, and precision instruments. MTC EN 10204 3.1 available.

FeCrCo Permanent Magnet Alloy | Wrought Iron-Chromium-Cobalt Magnets
Product Overview
FeCrCo permanent magnet alloy is a rare-earth-free permanent magnetic material based on iron, chromium and cobalt. It combines permanent magnetic performance with excellent ductility, machinability, formability and high-temperature stability, making it suitable for producing thin, small and complex-shaped magnetic components.
Unlike many brittle permanent magnet materials, wrought Fe-Cr-Co permanent magnet alloy can be processed through rolling, drawing, stamping, bending and machining before final magnetic heat treatment. This makes FeCrCo particularly useful when a permanent magnet requires precise dimensions, narrow sections, wires, strips or complicated geometries.
Hefei Ke Ningman New Energy Materials Technology Co., Ltd. supplies wrought FeCrCo permanent magnet alloys in customized forms and dimensions according to customer drawings, magnetic requirements and application conditions. Available product forms can include strip, sheet, wire, rod, bar and other customized shapes.
Key Features of FeCrCo Permanent Magnet Alloy
Excellent ductility and mechanical workability
Good machinability before final magnetic aging
Suitable for thin, narrow and complex-shaped magnetic components
High Curie temperature
Good resistance to magnetic demagnetization
Stable permanent magnetic performance
Available in strip, sheet, wire, rod and bar forms
Suitable for customized dimensions and magnetic requirements
Rare-earth-free permanent magnet material
Suitable for precision magnetic components and high-temperature applications
What Is FeCrCo Permanent Magnet Alloy?
FeCrCo is an iron-chromium-cobalt permanent magnet alloy developed for applications that require a combination of magnetic performance and mechanical workability.
The alloy can be manufactured as a wrought permanent magnet material, allowing it to undergo conventional metalworking processes before its final magnetic heat treatment. This characteristic distinguishes FeCrCo from many conventional permanent magnet materials that are difficult to form or machine after magnetization.
The magnetic properties of FeCrCo are developed through carefully controlled heat treatment and magnetic aging. Its microstructure and processing history have a significant influence on the final remanence, coercivity and maximum energy product.
For this reason, FeCrCo is particularly suitable for precision components where both magnetic performance and manufacturing flexibility are important.
FeCrCo Permanent Magnet Alloy Specifications
The final properties of FeCrCo depend on the selected grade, chemical composition, processing condition and heat treatment.
| Property | Specification |
|---|---|
| Material | Iron-Chromium-Cobalt (Fe-Cr-Co) |
| Material Type | Wrought permanent magnet alloy |
| Main Elements | Fe, Cr, Co |
| Magnetic Properties | Grade dependent |
| Remanence (Br) | Grade dependent |
| Coercive Force (Hcb) | Grade dependent |
| Intrinsic Coercivity (Hcj) | Grade dependent |
| Maximum Energy Product (BH)max | Grade dependent |
| Curie Temperature | Grade dependent |
| Density | Grade dependent |
| Product Forms | Strip, sheet, wire, rod, bar and custom shapes |
| Manufacturing Processes | Rolling, drawing, forming, stamping and machining |
| Heat Treatment | Grade and application dependent |
| Magnetization | Customized according to application |
For critical applications, customers can provide the required magnetic properties, dimensions, tolerances and operating temperature so that the appropriate FeCrCo grade and processing condition can be selected.
Why Choose FeCrCo Permanent Magnets?
Excellent Machinability
One of the most important advantages of FeCrCo is its excellent mechanical workability before final magnetic aging.
Depending on the required product geometry, FeCrCo can be processed using methods such as:
Cutting
Turning
Drilling
Milling
Stamping
Rolling
Drawing
Bending
Forming
This provides greater manufacturing flexibility when producing precision magnetic components.
High Ductility and Formability
FeCrCo offers significantly better ductility and formability than many brittle permanent magnet materials.
It can be processed into thin strips, wires, narrow sections and other geometries that may be difficult to manufacture from conventional hard magnetic materials.
This makes FeCrCo an excellent option for applications requiring:
Thin magnetic components
Small magnetic parts
Long and narrow magnets
Curved components
Complex profiles
Customized magnetic structures
High Curie Temperature
FeCrCo alloys have a relatively high Curie temperature compared with many permanent magnet materials.
The exact Curie temperature and recommended operating temperature depend on the alloy grade and heat treatment. For high-temperature applications, the appropriate grade should be selected according to the actual operating environment.
Good Resistance to Demagnetization
Properly heat-treated FeCrCo can provide strong resistance to demagnetization and stable permanent magnetic performance.
This is particularly important in magnetic components exposed to elevated temperatures or external magnetic fields.
Complex Shape Capability
FeCrCo is especially attractive when the final magnet needs a geometry that cannot be easily produced using conventional brittle permanent magnet materials.
Its combination of ductility, machinability and magnetic properties allows manufacturers to produce customized shapes with controlled dimensions and tolerances.
FeCrCo Permanent Magnet Manufacturing Process
The manufacturing process is carefully controlled because both mechanical properties and magnetic performance depend on composition, deformation and heat treatment.
1. Raw Material Preparation
Iron, chromium, cobalt and other required alloying elements are prepared according to the selected material specification.
2. Melting and Alloy Formation
The raw materials are melted under controlled conditions to achieve the required chemical composition and material uniformity.
3. Casting and Homogenization
The alloy is cast and may undergo homogenization treatment to improve compositional uniformity before subsequent processing.
4. Hot Working
The material can be hot rolled, forged or otherwise hot worked into an appropriate intermediate form.
5. Cold Rolling or Drawing
Cold working can be used to achieve the required thickness, diameter, dimensional accuracy and surface condition.
Typical products include:
FeCrCo strip
FeCrCo sheet
FeCrCo wire
FeCrCo rod
FeCrCo bar
6. Precision Machining
Depending on the product design, FeCrCo can be machined or formed into the required geometry before final magnetic treatment.
7. Magnetic Heat Treatment
Controlled heat treatment and magnetic aging are used to develop the desired magnetic microstructure and permanent magnetic properties.
8. Magnetization
The finished component can be magnetized according to the required magnetic direction and application.
9. Final Inspection
Final inspection may include dimensional inspection, surface inspection, chemical composition verification and magnetic property testing according to the agreed specification.
FeCrCo Magnetic Properties
The magnetic performance of FeCrCo depends strongly on alloy composition, deformation, heat treatment and magnetic aging.
Important parameters include:
Remanence (Br)
Coercive force (Hcb)
Intrinsic coercivity (Hcj)
Maximum energy product (BH)max
Curie temperature
Temperature coefficient
Demagnetization characteristics
For engineering applications, the magnetic specification should be determined together with the required geometry and operating temperature.
We can provide magnetic property data and inspection information according to the applicable grade and customer requirements.
FeCrCo Permanent Magnet Available Forms
We supply FeCrCo permanent magnet alloy in various forms according to application and manufacturing requirements.
FeCrCo Strip
FeCrCo strip is suitable for thin magnetic components, precision instruments and applications requiring controlled thickness and width.
FeCrCo Wire
FeCrCo wire is suitable for small, narrow and elongated magnetic components where ductility and dimensional control are important.
FeCrCo Sheet
FeCrCo sheet can be processed into customized magnetic components according to customer drawings.
FeCrCo Bar and Rod
Bar and rod products are suitable for machined permanent magnetic components and applications requiring larger cross-sections.
Custom FeCrCo Components
Custom shapes and dimensions can be manufactured according to customer drawings, specifications and application requirements.
FeCrCo vs Alnico vs NdFeB Magnets
Different permanent magnet materials offer different combinations of magnetic performance, temperature stability and mechanical properties.
| Property | FeCrCo | Alnico | NdFeB |
|---|---|---|---|
| Magnetic Performance | High, grade dependent | High | Very high |
| Ductility | Excellent | Limited | Low |
| Machinability | Good before final aging | Limited | Difficult |
| Complex Shapes | Excellent | More limited | More difficult |
| High-Temperature Capability | Excellent | Excellent | Grade dependent |
| Corrosion Resistance | Good | Excellent | Generally requires protection |
| Rare Earth | No | No | Yes |
| Thin Strip / Wire | Excellent | Limited | More difficult |
| Typical Advantage | Workability + magnetic performance | Temperature stability | Very high magnetic energy |
There is no single permanent magnet material that is best for every application. FeCrCo is particularly attractive when machinability, ductility, complex geometry and temperature stability are important design requirements.
FeCrCo Permanent Magnet Applications
FeCrCo permanent magnets are used in applications where magnetic performance must be combined with mechanical workability and dimensional precision.
Sensors
FeCrCo can be used in various magnetic sensing and positioning components.
Applications may include:
Position sensors
Magnetic sensors
Switching components
Measurement systems
Precision Instruments
FeCrCo is suitable for:
Meters
Gauges
Measuring instruments
Magnetic instruments
Precision magnetic components
Motors and Actuators
Depending on the magnetic grade and operating conditions, FeCrCo can be used in:
Small motors
Permanent magnet motors
Actuators
Magnetic drive components
Audio and Electromagnetic Components
FeCrCo can also be considered for selected:
Speakers
Receivers
Magnetic transducers
Electromagnetic components
Automotive Applications
FeCrCo can be used in selected automotive sensors, meters and small magnetic actuators where temperature stability and dimensional precision are important.
Custom FeCrCo Permanent Magnet Manufacturing
Every magnetic application has different requirements for dimensions, magnetic performance, temperature resistance and mechanical processing.
We support customized FeCrCo permanent magnet manufacturing based on:
Customer drawings
Material grade
Length
Width
Thickness
Diameter
Dimensional tolerance
Magnetic properties
Magnetization direction
Heat treatment requirements
Surface requirements
Application temperature
Annual quantity
Customers can provide a drawing, technical specification or application description for engineering evaluation.
FeCrCo Magnet Quality Control
Quality control is an important part of permanent magnet manufacturing because both dimensional accuracy and magnetic performance can affect the final application.
Depending on the agreed specification, inspection may include:
Chemical composition inspection
Dimensional inspection
Dimensional tolerance verification
Surface quality inspection
Hardness testing
Heat treatment records
Remanence testing
Coercivity testing
Maximum energy product testing
Demagnetization curve testing
Final product inspection
Inspection documents and material certification can be discussed according to customer requirements.
How to Choose the Right FeCrCo Magnet?
When selecting FeCrCo permanent magnet alloy, buyers should consider more than the magnet dimensions.
Important parameters include:
Required magnetic strength
Required Br
Required Hcj
Required BHmax
Maximum operating temperature
Magnet dimensions
Dimensional tolerance
Magnetization direction
Mechanical processing requirements
Working environment
Required service life
Annual purchase quantity
Providing these parameters allows the manufacturer to recommend a suitable FeCrCo material grade and manufacturing process.
Why Choose Hefei Ke Ningman New Energy Materials Technology Co., Ltd.?
Hefei Ke Ningman New Energy Materials Technology Co., Ltd. focuses on specialty magnetic alloys and advanced functional metal materials for industrial applications.
For FeCrCo permanent magnet alloy projects, we can support customers with:
Material selection
Customized dimensions
Customized product forms
Magnetic property requirements
Manufacturing process consultation
Quality inspection
Technical documentation
Bulk production
Export packaging
Our goal is to provide the magnetic material and processing solution that matches the customer's actual application requirements rather than simply supplying a standard material.
Frequently Asked Questions About FeCrCo Permanent Magnets
What is FeCrCo permanent magnet alloy?
FeCrCo permanent magnet alloy is an iron-chromium-cobalt magnetic material that combines permanent magnetic properties with excellent ductility, machinability and formability.
Is FeCrCo a permanent magnet?
Yes. After appropriate magnetic heat treatment and aging, FeCrCo develops permanent magnetic properties.
Is FeCrCo machinable?
Yes. FeCrCo is known for its excellent mechanical workability. It can be processed through methods such as rolling, drawing, stamping, drilling, turning and other machining operations, particularly before final magnetic aging.
What is FeCrCo used for?
FeCrCo is used for precision magnetic components, sensors, meters, instruments, motors, actuators and other applications requiring a combination of magnetic performance and mechanical workability.
Can FeCrCo be made into wire?
Yes. FeCrCo can be processed into wire and other thin, elongated forms when the required material grade and manufacturing process are suitable.
Is FeCrCo suitable for high-temperature applications?
Yes. FeCrCo has a relatively high Curie temperature and can provide good magnetic stability at elevated temperatures. The appropriate grade should be selected according to the actual operating temperature.
Is FeCrCo better than NdFeB?
Not universally. NdFeB generally provides higher magnetic energy density, while FeCrCo offers important advantages in ductility, machinability, complex-shape manufacturing and high-temperature stability.
What forms of FeCrCo are available?
Depending on the required specification, FeCrCo can be supplied as strip, sheet, wire, rod, bar and customized components.
Can you manufacture customized FeCrCo magnets?
Yes. Customized FeCrCo products can be manufactured according to customer drawings, dimensions, magnetic requirements, tolerances and application conditions.
What information should I provide when requesting a FeCrCo quotation?
The most useful information includes material grade, dimensions, quantity, magnetic requirements, magnetization direction, operating temperature and technical drawings if available.
Request a FeCrCo Permanent Magnet Alloy Quote
Looking for a FeCrCo permanent magnet manufacturer or supplier for your next project?
Send us your required material grade, dimensions, magnetic specifications, drawings or application requirements.
Our team can evaluate your requirements and provide a suitable wrought FeCrCo permanent magnet alloy solution.
Contact Hefei Ke Ningman New Energy Materials Technology Co., Ltd. for a customized FeCrCo magnet quotation.