2J31 Fe-Co-V Permanent Magnet Alloy | High Saturation Induction

Description

2J31 Fe-Co-V permanent magnet alloy (Remalloy type) offers high saturation induction (≥2.3T), stable magnetic properties, and excellent formability. Ideal for small-section magnets, sensors, and micro-motors. GB/T 14989-94 compliant.

2J31 Fe-Co-V Permanent Magnet Alloy | High Saturation Induction & Stable Magnetic Properties

Product Overview

2J31 Fe-Co-V permanent magnet alloy is an iron-cobalt-vanadium permanent magnetic alloy known for its high saturation magnetic induction, stable magnetic properties and good mechanical workability. It is designed for permanent magnetic components where high magnetic induction and the ability to manufacture small or relatively complex shapes are important.

2J31 is a Fe-Co-V permanent magnet alloy covered by the GB/T 14989 standard. According to the standard material data, 2J31 contains approximately 51–53% cobalt and 10.8–11.7% vanadium, with iron as the balance and controlled amounts of other elements.

Hefei Ke Ningman New Energy Materials Technology Co., Ltd. supplies 2J31 permanent magnet alloy for precision magnetic components, small-section permanent magnets, sensors, micro-motors and other applications requiring stable magnetic performance and good processing characteristics.

Key Features of 2J31 Permanent Magnet Alloy

• Fe-Co-V permanent magnet alloy

• 2J31 grade according to GB/T 14989

• High saturation magnetic induction

• Stable permanent magnetic properties

• Good mechanical workability

• Suitable for small-section magnetic components

• Suitable for wire and strip applications

• Suitable for precision magnetic components

• Can be processed into thin and complex-shaped components

• Suitable for sensors and small magnetic devices

• Available in customized dimensions and forms

• Suitable for industrial and precision magnetic applications

What Is 2J31 Fe-Co-V Permanent Magnet Alloy?

2J31 is an iron-cobalt-vanadium permanent magnet alloy belonging to the Fe-Co-V family of hard magnetic materials.

The alloy combines the high magnetic induction characteristics of Fe-Co based materials with controlled vanadium additions that contribute to its magnetic and processing characteristics.

2J31 is particularly useful where a permanent magnet needs to provide:

• High magnetic induction

• Stable magnetic properties

• Small cross-sectional dimensions

• Good mechanical processing characteristics

• Controlled dimensions

• Customized geometry

The alloy can be manufactured into different product forms, including wire and strip, depending on the required dimensions and applicable manufacturing standard.

2J31 Chemical Composition

The chemical composition of 2J31 is controlled according to the applicable material specification.

A typical GB/T 14989-1994 composition is shown below:

The final chemical composition should be confirmed against the applicable material certificate and agreed customer specification. GB/T 14989-1994 provides the standardized composition requirements for 2J31, 2J32 and 2J33 Fe-Co-V permanent magnet alloys.

2J31 Magnetic Properties

The magnetic properties of 2J31 depend on product form, processing condition, heat treatment and testing method.

Important magnetic parameters include:

• Saturation magnetic induction

• Residual magnetic induction (Br)

• Coercive force (Hc)

• Magnetic energy product

• Demagnetization characteristics

• Magnetic stability

The published GB/T 14989-1994 data distinguishes magnetic requirements for 2J31 wire and strip. For 2J31, the standard data lists a minimum coercive force of approximately 23.88 kA/m for wire and 17.51 kA/m for strip, with residual magnetic induction of at least 1.00 T for both forms.

For production orders, the final magnetic properties should be confirmed according to the actual product form, heat-treatment condition, testing method and customer specification.

2J31 Technical Specifications

Why Choose 2J31 Fe-Co-V Permanent Magnet Alloy?

High Saturation Magnetic Induction

One of the key characteristics of 2J31 is its high saturation magnetic induction.

The high magnetic induction capability makes 2J31 suitable for applications where a relatively strong magnetic field is required within a compact magnetic component.

This is particularly relevant for:

• Small permanent magnets

• Magnetic sensors

• Micro-motors

• Precision instruments

• Small-section magnetic components

The exact saturation value should be specified according to the applicable test method and material condition.

Stable Magnetic Properties

2J31 is designed for permanent magnetic applications requiring stable magnetic performance.

Proper control of alloy composition, deformation and heat treatment is important for achieving consistent magnetic characteristics.

For precision applications, we recommend evaluating:

• Residual induction

• Coercive force

• Operating temperature

• Magnetic aging

• Dimensional stability

• Demagnetization behavior

Good Mechanical Workability

Compared with many brittle permanent magnet materials, Fe-Co-V permanent magnet alloys can be processed into relatively small and complex magnetic components.

2J31 is available in forms such as:

• Cold-drawn wire

• Cold-rolled strip

• Small-section material

• Customized magnetic components

This makes the alloy suitable for precision components where dimensional control and magnetic performance must be considered together.

Suitable for Small-Section Magnetic Components

2J31 is particularly suitable for applications requiring small cross-sectional permanent magnetic components.

Typical requirements may include:

• Small diameter

• Thin strip

• Narrow magnetic section

• Precision dimensions

• Complex geometry

This characteristic makes 2J31 attractive for sensors, small motors and precision magnetic mechanisms.

2J31 Permanent Magnet Alloy Manufacturing Process

The manufacturing process is controlled to achieve the required chemical composition, dimensional accuracy and magnetic properties.

1. Raw Material Preparation

Iron, cobalt, vanadium and other controlled alloying elements are prepared according to the required composition.

2. Melting

The alloy is melted under controlled conditions to obtain the required chemical composition and material uniformity.

GB/T 14989-1994 specifies that the alloy can be melted using vacuum induction melting, non-vacuum induction melting or another method capable of meeting the standard requirements.

3. Casting and Homogenization

After melting, the alloy is cast and may undergo appropriate homogenization or subsequent thermal processing before mechanical working.

4. Hot Working

The material can be hot worked into an intermediate form suitable for further processing.

5. Cold Rolling or Cold Drawing

Depending on the final product, cold rolling or drawing can be used to obtain the required dimensions and surface condition.

Typical products include:

• 2J31 cold-drawn wire

• 2J31 cold-rolled strip

• Precision small-section material

GB/T 14989 specifically provides dimensional requirements for 2J31 cold-drawn wire and cold-rolled strip.

6. Heat Treatment

Controlled heat treatment is used to develop the required magnetic properties.

The final magnetic performance depends on the combination of alloy composition, deformation and thermal processing.

7. Precision Processing

Where required, the material can be processed according to the final component geometry.

8. Magnetic Testing

Final magnetic inspection can include:

• Residual magnetic induction

• Coercive force

• Magnetic hysteresis characteristics

• Other agreed magnetic parameters

9. Dimensional Inspection

Final products are inspected according to applicable dimensional tolerances and customer drawings.

2J31 Wire

2J31 permanent magnet wire is suitable for small-section magnetic components where controlled diameter, magnetic properties and mechanical processing are important.

Typical applications may include:

• Small magnetic components

• Precision sensors

• Miniature magnetic mechanisms

• Micro-motors

• Electromagnetic components

Cold-drawn wire dimensions and tolerances can be specified according to GB/T 14989 and customer requirements.

For customized wire requirements, customers can provide:

• Diameter

• Length

• Tolerance

• Magnetic properties

• Surface condition

• Quantity

• 2J31 Permanent Magnet Strip

2J31 cold-rolled strip is suitable for thin and narrow magnetic components.

Applications may include:

• Thin magnetic elements

• Sensors

• Small magnetic mechanisms

• Precision instruments

• Miniature motors

Strip can be specified according to:

• Thickness

• Width

• Length

• Dimensional tolerance

• Magnetic performance

• Surface condition

The applicable standard provides dimensional and magnetic requirements for 2J31 cold-rolled strip.

2J31 vs FeCrCo Permanent Magnet Alloy

Both 2J31 Fe-Co-V and Fe-Cr-Co are ductile or workable permanent magnet alloy systems, but their material characteristics and applications are different.

When selecting between the two materials, the final decision should be based on magnetic requirements, geometry, manufacturing process, temperature conditions and cost.

2J31 vs SmCo Permanent Magnets

2J31 and SmCo serve different application requirements.

2J31 can be particularly attractive when the product requires a wrought Fe-Co-V material in wire or strip form, while SmCo is often selected when high-temperature stability and high coercivity are the primary requirements.

2J31 Permanent Magnet Alloy Applications

Magnetic Sensors

2J31 can be used in selected sensor applications requiring stable magnetic characteristics and small magnetic components.

Potential applications include:

• Position sensing

• Magnetic switching

• Precision sensors

• Magnetic detection systems

• Micro-Motors

2J31 can be considered for selected miniature motor and actuator applications where small-section permanent magnetic components are required.

Precision Instruments

Applications may include:

• Measuring instruments

• Magnetic meters

• Precision mechanisms

• Instrument components

Small Permanent Magnetic Components

2J31 is suitable for applications requiring small or narrow magnetic sections.

Examples include:

• Small magnetic elements

• Precision magnetic parts

• Miniature actuators

• Specialized magnetic assemblies

Recording and Magnetic Components

Fe-Co-V permanent magnetic alloys have historically been used in small magnetic components and selected recording-related applications.

2J31 Quality Control

Quality control is essential for maintaining consistent magnetic and dimensional performance.

Depending on the agreed specification, inspection may include:

Chemical Composition

Verification of:

• Co

• V

• C

• Mn

• Si

• P

• S

• Ni

• Fe

Dimensional Inspection

Inspection may include:

• Wire diameter

• Strip thickness

• Strip width

• Length

• Straightness

• Dimensional tolerance

Magnetic Inspection

Depending on the order requirements:

• Residual magnetic induction

• Coercive force

• Saturation magnetic induction

• Magnetic hysteresis characteristics

Surface Inspection

The surface is checked for defects that could affect subsequent processing or final application.

Material Documentation

Material certificates and inspection documentation can be provided according to customer requirements.

Custom 2J31 Fe-Co-V Permanent Magnet Alloy

We support customized 2J31 permanent magnet alloy according to customer drawings and technical requirements.

Customization may include:

• Wire diameter

• Strip thickness

• Strip width

• Product length

• Dimensional tolerance

• Magnetic properties

• Surface condition

• Heat treatment

• Packaging

• Quantity

Customers can provide a drawing, material specification or application description for technical evaluation.

How to Select 2J31 Permanent Magnet Alloy

When selecting 2J31 for a magnetic component, consider the following parameters:

• Required magnetic induction

• Required residual induction

• Required coercive force

• Product form

• Wire diameter or strip thickness

• Width and length

• Dimensional tolerance

• Operating temperature

• Required magnetic stability

• Mechanical processing requirements

• Quantity

• Applicable standard

Providing these parameters allows the material supplier to determine the appropriate product condition and manufacturing route.

2J31 Fe-Co-V Permanent Magnet Alloy Standards

2J31 is included in the GB/T 14989-1994 Iron-Cobalt-Vanadium Permanent Magnet Alloy standard.

The standard covers Fe-Co-V permanent magnet alloys including 2J31, 2J32 and 2J33 and specifies requirements relating to chemical composition, product forms, dimensions, tolerances and magnetic properties.

For export projects, the applicable technical specification should be confirmed according to the customer's required standard, drawing and inspection requirements.

Why Choose Hefei Ke Ningman New Energy Materials Technology Co., Ltd.?

Hefei Ke Ningman New Energy Materials Technology Co., Ltd. supplies specialty magnetic alloys and functional metal materials for industrial applications.

For 2J31 Fe-Co-V permanent magnet alloy projects, we can support customers with:

• Material selection

• 2J31 grade supply

• Wire and strip products

• Customized dimensions

• Magnetic property requirements

• Dimensional tolerance control

• Quality inspection

• Technical documentation

• Bulk production

• Export packaging

Our goal is to provide a material solution matched to the customer's actual magnetic, dimensional and manufacturing requirements.

Frequently Asked Questions About 2J31 Fe-Co-V Permanent Magnet Alloy

What is 2J31 Fe-Co-V permanent magnet alloy?

2J31 is an iron-cobalt-vanadium permanent magnet alloy designed for applications requiring high magnetic induction, stable magnetic properties and good mechanical workability.

What is the chemical composition of 2J31?

According to GB/T 14989-1994, 2J31 contains approximately 51–53% cobalt and 10.8–11.7% vanadium, with iron as the balance and controlled amounts of carbon, manganese, silicon, phosphorus, sulfur and nickel.

What standard covers 2J31?

2J31 is covered by GB/T 14989-1994 Iron-Cobalt-Vanadium Permanent Magnet Alloy.

What is 2J31 used for?

2J31 can be used for small-section permanent magnetic components, sensors, micro-motors, precision instruments and other specialized magnetic applications.

Can 2J31 be supplied as wire?

Yes. 2J31 can be supplied as cold-drawn wire according to applicable dimensional and magnetic requirements.

Can 2J31 be supplied as strip?

Yes. 2J31 can be supplied as cold-rolled strip with specified thickness, width, length and dimensional tolerances.

What is the advantage of 2J31 over conventional permanent magnets?

The main advantages are its Fe-Co-V alloy system, high magnetic induction, stable magnetic properties and suitability for producing small-section and relatively complex magnetic components.

Is 2J31 a rare-earth permanent magnet?

No. 2J31 is an iron-cobalt-vanadium permanent magnet alloy and does not rely on rare-earth elements such as neodymium or samarium.

Can you provide customized 2J31 material?

Yes. Customized dimensions, product forms, tolerances, magnetic requirements and packaging can be discussed according to the customer's application and technical specification.

What information is needed for a 2J31 quotation?

Please provide the required grade, product form, dimensions, tolerances, magnetic requirements, quantity, operating conditions and technical drawings if available.

Request a 2J31 Fe-Co-V Permanent Magnet Alloy Quote

Looking for a 2J31 Fe-Co-V permanent magnet alloy manufacturer or supplier?

Send us your required dimensions, product form, magnetic specifications, technical drawing or application requirements.

Hefei Ke Ningman New Energy Materials Technology Co., Ltd. can evaluate your requirements and provide a suitable 2J31 permanent magnet alloy solution.

Contact us today for a customized 2J31 Fe-Co-V permanent magnet alloy quotation.