Neodymium Disc Magnet – 5mm x 4mm | N50 | Gold Coated

Description

The Neodymium Disc Magnet – 5mm x 4mm | N50 | Gold Coated is a compact, high-strength rare earth magnet featuring a premium gold-coated finish. Manufactured from N50 grade Neodymium Iron Boron (NdFeB), this small but powerful permanent magnet offers excellent magnetic performance relative to its size.

Measuring 5mm in diameter and 4mm thick, this neodymium disc magnet has a relatively thick cylindrical profile compared with ultra-thin disc magnets. Its substantial 4mm thickness provides a greater volume of magnetic material within the same 5mm diameter, making it a practical choice for applications requiring strong magnetic attraction from a compact footprint.

The N50 magnetic grade offers high magnetic energy density, making this magnet suitable for precision engineering, miniature magnetic assemblies, magnetic closures, model making, decorative applications and custom magnetic projects.

Its gold-coated finish provides an attractive metallic appearance while helping protect the underlying neodymium material from environmental exposure. This makes it particularly useful in applications where the magnet may remain visible within a finished product.

Neodymium magnets, also known as rare earth magnets, NdFeB magnets, super strong magnets or permanent neodymium magnets, are among the strongest commercially available permanent magnets. Their high magnetic energy density allows impressive magnetic strength from relatively small dimensions.

The N50 designation refers to the magnetic material grade and does not represent a pull force of 50kg. Actual magnetic holding performance depends on the magnet's dimensions, magnetisation direction, contact area, target material and operating conditions.

With its 5mm diameter, 4mm thickness and high-performance N50 grade, this magnet provides a versatile magnetic component for applications where space is limited but magnetic strength is important.

Also known as a 5mm x 4mm gold neodymium magnet, N50 rare earth disc magnet, gold-coated cylindrical magnet, miniature high-strength magnet, small round neodymium magnet or precision NdFeB magnet, this product offers a practical solution for specialised magnetic applications.

Key Features

• Diameter: 5mm

• Thickness: 4mm

• Magnet Grade: N50

• Material: Neodymium Iron Boron (NdFeB)

• Shape: Round Disc / Short Cylinder

• Coating: Gold

• Product Type: Permanent Rare Earth Magnet

• High-performance N50 magnetic material

• Compact 5mm diameter

• Substantial 4mm thickness

• Strong magnetic attraction relative to size

• Attractive gold-coated finish

• Suitable for precision magnetic assemblies

• Useful for miniature magnetic closures

• Ideal for craft and decorative applications

• Suitable for model making and prototypes

• Permanent magnetic field without electrical power

Common Applications

This gold-coated N50 neodymium disc magnet may be suitable for:

• Miniature magnetic closures

• Precision engineering

• Custom magnetic assemblies

• Model making

• Craft projects

• Decorative applications

• Jewellery components

• Magnetic positioning systems

• Small magnetic fixtures

• DIY magnetic fastening

• Magnetic artwork

• Prototype development

• Scientific experiments

• Magnetic sensing applications

• Compact magnetic mechanisms

• Educational projects

• Custom product manufacturing

Application suitability depends on the required holding force, mounting arrangement and operating conditions.

Compact 5mm x 4mm Design

This magnet features a compact cylindrical profile measuring:

• Diameter: 5mm

• Thickness: 4mm

Unlike ultra-thin disc magnets, this magnet has a relatively thick profile, providing a greater volume of magnetic material within the same diameter.

Potential applications include:

• Compact magnetic closures

• Precision magnetic fixtures

• Miniature assemblies

• Custom magnetic mechanisms

• Model-making projects

• Decorative magnetic components

The magnet's small diameter allows it to be incorporated into narrow spaces where larger magnets may not fit.

High-Performance N50 Neodymium Grade

This magnet is manufactured from N50 grade Neodymium Iron Boron (NdFeB).

N50 is a high-performance neodymium magnetic grade recognised for its high maximum energy product.

Compared with lower grades such as N35, N38 and N42, N50 material generally provides greater magnetic energy potential when comparing magnets of identical dimensions and magnetisation.

Benefits of N50 Magnetic Material

High Magnetic Strength Relative to Size

N50 neodymium magnets provide strong magnetic performance from compact dimensions.

Suitable for Precision Applications

The high magnetic energy density makes N50 material useful for small magnetic components.

Permanent Magnetic Field

Provides magnetic attraction without requiring electrical power.

Versatile Applications

Suitable for engineering, craft projects, miniature closures and custom magnetic assemblies.

The N50 grade does not indicate a 50kg pull-force rating.

Premium Gold-Coated Finish

This neodymium disc magnet features a gold coating, providing an attractive metallic appearance and protective surface layer.

Neodymium Iron Boron material can be susceptible to corrosion when exposed to moisture and unsuitable environmental conditions.

Protective coatings help reduce direct exposure of the underlying magnetic material.

Benefits of Gold Coating

• Attractive metallic appearance

• Protective surface layer

• Suitable for visible magnetic components

• Useful for decorative applications

• Suitable for precision assemblies

• Premium finish for custom products

Please Note: The exact coating composition, thickness and corrosion-resistance rating have not been supplied. Gold-coated neodymium magnets may incorporate additional underlying plating layers.

The gold coating should not be assumed to provide waterproof performance or suitability for prolonged skin contact without confirmed specifications.

Miniature Magnetic Closures

This N50 gold-coated disc magnet may be suitable for creating discreet magnetic closures in compact applications.

Potential uses include:

• Small decorative boxes

• Miniature cases

• Craft packaging

• Lightweight display components

• Custom accessories

• Model-making projects

A magnetic closure may use:

• One magnet and a suitable ferromagnetic steel component

• Two magnets with correctly aligned opposite poles

For best results, ensure the magnets are positioned correctly and that the contact surfaces are clean.

Precision Engineering Applications

The compact 5mm diameter and 4mm thickness make this magnet useful for precision engineering and custom magnetic assemblies.

Potential applications include:

• Magnetic positioning mechanisms

• Small magnetic fixtures

• Custom equipment

• Engineering prototypes

• Scientific instruments

• Miniature magnetic components

Its compact size allows it to be incorporated into applications where larger magnets may not be practical.

Craft and Decorative Applications

Gold-coated neodymium magnets are also popular for creative projects where both magnetic performance and appearance are important.

Potential applications include:

• Handmade crafts

• Decorative magnetic closures

• Jewellery components

• Custom packaging

• Miniature models

• Magnetic artwork

• Personalised accessories

For adhesive mounting, select an adhesive suitable for the magnet's coating and the intended substrate.

Magnetic Field and Magnetisation Direction

The magnetic field generated by a neodymium disc magnet depends on its material grade, dimensions and magnetisation direction.

Disc magnets are commonly magnetised axially, with North and South poles on opposite flat circular faces.

However, the magnetisation direction of this specific product has not been confirmed.

For applications requiring a particular pole orientation, confirm the magnetisation direction before installation.

Magnetic Holding Performance

The holding strength of this N50 disc magnet depends on several factors, including:

• Magnet dimensions

• N50 magnetic grade

• Magnetisation direction

• Contact surface area

• Target steel thickness

• Surface condition

• Air gaps

• Load orientation

• Operating temperature

• Magnetic circuit configuration

The exact pull-force rating and surface Gauss have not been supplied.

For applications requiring a defined holding force, obtain verified performance data or conduct appropriate testing.

Installation and Handling

Due to its compact dimensions and strong magnetic material, this magnet should be handled carefully.

General Recommendations

1. Confirm the required magnetic performance.

2. Verify the magnet's dimensions and pole orientation.

3. Select a suitable mounting method.

4. Avoid excessive mechanical pressure.

5. Prevent uncontrolled collisions with other magnets.

6. Protect the gold coating from scratches.

7. Use suitable adhesives where required.

8. Test the completed assembly before regular use.

Important: Do not drill, cut, grind or machine finished neodymium magnets.

Suitable Magnetic Surfaces

This neodymium magnet attracts suitable ferromagnetic materials, including:

• Mild steel

• Iron

• Certain magnetic steel alloys

• Compatible ferromagnetic components

It does not magnetically attach to:

• Aluminium

• Copper

• Brass

• Timber

• Plastic

• Glass

• Non-magnetic stainless steel

Some stainless steel grades are magnetic, while others are not.

The magnet may also attract or repel other permanent magnets depending on their pole orientation.

Technical Specifications

Compliance & Safety

Strong Magnetic Field: Neodymium magnets can attract ferromagnetic objects and other magnets suddenly.

Brittle Material: Neodymium magnets are brittle and may chip, crack or shatter if dropped or subjected to impact.

Pinch Hazard: Keep fingers and skin clear when bringing magnets together or placing them against steel surfaces.

Swallowing Hazard: This small magnet presents a serious ingestion hazard. Swallowed magnets can cause life-threatening internal injuries and require urgent medical attention.

Children: Keep away from children. Do not use in toys or products accessible to young children without appropriate safety assessment.

Medical Devices: Magnets may interfere with pacemakers, implanted medical devices and magnetically sensitive equipment. Follow the relevant manufacturer's safety guidance.

Electronic Equipment: Keep magnets away from equipment and media that may be affected by magnetic fields.

Machining: Do not drill, cut or grind finished neodymium magnets.

Temperature: Excessive heat can permanently reduce magnetic performance. Confirm the operating temperature rating before use in elevated-temperature environments.

Coating: Avoid scratching or damaging the gold finish, as exposed neodymium material may be susceptible to corrosion.

Load-Bearing Applications: Do not use this magnet for overhead lifting or safety-critical holding applications.

Frequently Asked Questions

What are the dimensions of this neodymium disc magnet?

The magnet measures 5mm in diameter and 4mm thick.

What does N50 mean?

N50 is the grade of the neodymium magnetic material. It indicates a high-performance magnetic classification and does not mean the magnet has a 50kg pull force.

Is this a strong magnet?

Yes. N50 neodymium magnets provide high magnetic strength relative to their size. Actual holding performance depends on the magnetisation direction and application conditions.

Is this magnet gold coated?

Yes. This product features a gold coating.

Is the gold coating real gold?

The product is specified as gold coated, but the exact coating composition and plating structure have not been supplied.

Can this magnet be used for craft projects?

Yes. Its compact dimensions make it suitable for craft projects, model making and decorative applications.

Can this magnet be used for jewellery?

It may be suitable for certain jewellery components and decorative accessories, depending on the design and required holding force. Coating suitability for prolonged skin contact has not been confirmed.

Can I use this magnet for miniature closures?

Yes. It may be suitable for lightweight magnetic closures in small boxes, packaging and miniature assemblies.

What is the pull force of this magnet?

A specific pull-force rating has not been supplied. Holding performance depends on the magnetisation direction, contact area and installation conditions.

Is this magnet magnetised through its thickness?

Axial magnetisation is common for neodymium disc magnets, but the magnetisation direction of this specific product has not been confirmed.

Can I glue this magnet into a project?

Yes. A suitable adhesive may be used, provided it is compatible with the magnet's coating and the intended substrate.

Can this magnet break?

Yes. Neodymium magnets are brittle and may chip, crack or shatter if subjected to impact or excessive mechanical stress.

Is this magnet safe for children?

No. Small magnets present a serious swallowing hazard and should be kept away from children.

Is this magnet suitable for outdoor use?

Outdoor suitability depends on the coating and environmental conditions. The exact corrosion-resistance rating has not been supplied.

Related Products

Customers considering this gold-coated N50 neodymium disc magnet may also be interested in:

• Neodymium Disc Magnet – 5mm x 1mm | N50 | Gold

• Neodymium Disc Magnets in Other Sizes

• Gold-Coated Neodymium Magnets

• N50 Neodymium Disc Magnets

• N52 Neodymium Disc Magnets

• Miniature Rare Earth Magnets

• Self-Adhesive Neodymium Disc Magnets

• Neodymium Block Magnets

• Neodymium Ring Magnets

• Magnetic Craft Supplies

• Magnetic Closure Components

• Precision Magnetic Components

Please Note

This Neodymium Disc Magnet – 5mm x 4mm | N50 | Gold Coated is manufactured from N50 grade neodymium iron boron magnetic material.

Its dimensions are 5mm in diameter and 4mm thick, with a gold-coated finish.

The exact pull force, surface Gauss, coating composition, magnetisation direction, dimensional tolerances and maximum operating temperature have not been supplied.

N50 refers to the magnetic material grade, not a pull-force rating.

Neodymium magnets are brittle by nature and must be handled carefully to prevent chipping, cracking or shattering.

Warning: This small magnet presents a serious swallowing hazard and must be kept away from children.

For applications requiring a specific holding force or coating performance, confirm the relevant technical specifications and test the magnet in its intended operating conditions.