Neodymium Disc Magnet - 4mm x 2mm | N42

Product code: 20082

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Neodymium Disc Magnet - 4mm x 2mm | N42

Rated 5.0 out of 5
Based on 6 reviews
Product Code 20082
Pull Force* .344 kg
Weight 1 gm
Style Rare Earth Disc magnet (N42)
Gauss 4667
Grade N42
Coating Nickel (NiCuNi)
Direction of Magnetisation Axially magnetised
Dimensions Height:2mm, Diameter:4mm
*Measured against up to 10mm mild steel.
Neodymium Disc Magnet - 4mm x 2mm | N42

Neodymium Disc Magnet Product Description:

This small Rare Earth Disc comes in a popular compact size with a diameter of 4mm and a height of 2mm. It has a strong magnetic flux reading of 4667 Gauss and a pull force of 344g. For added protection and corrosion resistance, it has a nickel coating. This magnet neodymium disc is identified by part number 20082.


Uses for our Neodymium Rare Earth Disc Magnets:

Often used as craft magnetic discs, these small magnets are extremely strong for their size. This Neodymium high-grade N42 disc magnet has added holding strength to perfectly compliment this popular disc size. Their petite dimensions make them attractive magnets for home users and professionals alike. They have wide applications including in the design and production of sensors, actuators, electric motors and in packaging.
They are also popular among artists, craftspeople and hobbyists. These craftspeople need a small magnet discreet enough to be incorporated into a design without being visible in the completed work.

Neodymium Disc Magnet - 4mm x 2mm | N42 (20082)

Grade
N42 N/A
Max Operating Temperature °C
<=80 N/A
Remanence Br(T)
1.3-1.35 N/A
Remanence Br(kGs)
13-13.5 N/A
Coercivity bHc(kA/m)
>=836 N/A
Coercivity bHc(Oe)
>=10.5 N/A
Intrinsic Coercivity iHc(kA/m)
>=955 N/A
Intrinsic Coercivity iHc(Oe)
>=12 N/A
Max Energy Product(BH)max(KJ/m)
318-350 N/A
Max Energy Product(BH)max(MGOe)
40-44 N/A
Grade N42 N/A
Max Operating Temperature °C <=80 N/A
Remanence Br(T) 1.3-1.35 N/A
Remanence Br(kGs) 13-13.5 N/A
Coercivity bHc(kA/m) >=836 N/A
Coercivity bHc(Oe) >=10.5 N/A
Intrinsic Coercivity iHc(kA/m) >=955 N/A
Intrinsic Coercivity iHc(Oe) >=12 N/A
Max Energy Product(BH)max(KJ/m) 318-350 N/A
Max Energy Product(BH)max(MGOe) 40-44 N/A

NB: Ranges are indicative for product category, please check individual products for specic values within that range.

The most common coating for Neodymium magnets is Nickel + Copper + Nickel (Ni + Cu + Ni). This coating offers the magnet relatively good protection from corrosion and passive applications. If the magnet will be exposed to moisture or liquid then consider the use of an organic coating such as Epoxy. A hard wearing coating, Epoxy is suited to applications where the magnet will come under some friction or knocking.

Magnets are readily available in Blocks, Discs, Cylinders & Rings. AMF Magnetics specializes in the supply of short-run prototype magnets including Arc Segments, various magnetic orientations etc. If you need a magnet size that we don't carry in stock, submit a Design-a-Magnet enquiry for a quote on your custom magnet design.

Neodymium magnets are offered in several different grades. The first section N30-54 has an operating temperature of up to 80 degrees. Most of our stock only goes up to N38. The second section, denoted with the "M" prefix after the grade has an operating temperature 100 degrees. After this the grades are "H", "SH", "UH" & "EH". In order for the magnet to withstand a higher operating temperature, during production more of the raw material PrNd is incorporated as these elements have a naturally occurring resistance to high temperatures.

average rating 5.0 out of 5
Based on 6 reviews
  • 5 Stars
    6 Reviews
  • 4 Stars
    0 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
6 Reviews
Reviewed by Rhonda H.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Disc Magnets

These small strong magnets are just perfect . I am a keen paper crafter and these magnets are so easy to close bulky cards and do not lose any strength being glued between 2 layers of cardstock. Love them!

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Reviewed by Nick J.
I recommend this product
Rated 5 out of 5
Review posted

Fantastic for Miniature Pinning

Used to pin larger miniatures to flying bases. Worked amazingly

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Reviewed by jan
I recommend this product
Rated 5 out of 5
Review posted

Excellent service

Fast delivery

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Reviewed by Sam
I recommend this product
Rated 5 out of 5
Review posted

4mm N24

Done the job and solved the problem perfectly!!

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Reviewed by Ron
I recommend this product
Rated 5 out of 5
Review posted

Exactly as advertised.

Exactly as advertised. Supplied safety sheet is a good addition.

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Neodymium Disc Magnet - 4mm x 2mm | N42

Neodymium Disc Magnet Product Description:

This small Rare Earth Disc comes in a popular compact size with a diameter of 4mm and a height of 2mm. It has a strong magnetic flux reading of 4667 Gauss and a pull force of 344g. For added protection and corrosion resistance, it has a nickel coating. This magnet neodymium disc is identified by part number 20082.


Uses for our Neodymium Rare Earth Disc Magnets:

Often used as craft magnetic discs, these small magnets are extremely strong for their size. This Neodymium high-grade N42 disc magnet has added holding strength to perfectly compliment this popular disc size. Their petite dimensions make them attractive magnets for home users and professionals alike. They have wide applications including in the design and production of sensors, actuators, electric motors and in packaging.
They are also popular among artists, craftspeople and hobbyists. These craftspeople need a small magnet discreet enough to be incorporated into a design without being visible in the completed work.

Neodymium Disc Magnet - 4mm x 2mm | N42 (20082)

Grade
N42 N/A
Max Operating Temperature °C
<=80 N/A
Remanence Br(T)
1.3-1.35 N/A
Remanence Br(kGs)
13-13.5 N/A
Coercivity bHc(kA/m)
>=836 N/A
Coercivity bHc(Oe)
>=10.5 N/A
Intrinsic Coercivity iHc(kA/m)
>=955 N/A
Intrinsic Coercivity iHc(Oe)
>=12 N/A
Max Energy Product(BH)max(KJ/m)
318-350 N/A
Max Energy Product(BH)max(MGOe)
40-44 N/A
Grade N42 N/A
Max Operating Temperature °C <=80 N/A
Remanence Br(T) 1.3-1.35 N/A
Remanence Br(kGs) 13-13.5 N/A
Coercivity bHc(kA/m) >=836 N/A
Coercivity bHc(Oe) >=10.5 N/A
Intrinsic Coercivity iHc(kA/m) >=955 N/A
Intrinsic Coercivity iHc(Oe) >=12 N/A
Max Energy Product(BH)max(KJ/m) 318-350 N/A
Max Energy Product(BH)max(MGOe) 40-44 N/A

NB: Ranges are indicative for product category, please check individual products for specic values within that range.

The most common coating for Neodymium magnets is Nickel + Copper + Nickel (Ni + Cu + Ni). This coating offers the magnet relatively good protection from corrosion and passive applications. If the magnet will be exposed to moisture or liquid then consider the use of an organic coating such as Epoxy. A hard wearing coating, Epoxy is suited to applications where the magnet will come under some friction or knocking.

Magnets are readily available in Blocks, Discs, Cylinders & Rings. AMF Magnetics specializes in the supply of short-run prototype magnets including Arc Segments, various magnetic orientations etc. If you need a magnet size that we don't carry in stock, submit a Design-a-Magnet enquiry for a quote on your custom magnet design.

Neodymium magnets are offered in several different grades. The first section N30-54 has an operating temperature of up to 80 degrees. Most of our stock only goes up to N38. The second section, denoted with the "M" prefix after the grade has an operating temperature 100 degrees. After this the grades are "H", "SH", "UH" & "EH". In order for the magnet to withstand a higher operating temperature, during production more of the raw material PrNd is incorporated as these elements have a naturally occurring resistance to high temperatures.

average rating 5.0 out of 5
Based on 6 reviews
  • 5 Stars
    6 Reviews
  • 4 Stars
    0 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
6 Reviews
Reviewed by Rhonda H.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Disc Magnets

These small strong magnets are just perfect . I am a keen paper crafter and these magnets are so easy to close bulky cards and do not lose any strength being glued between 2 layers of cardstock. Love them!

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Was this helpful?
Reviewed by Nick J.
I recommend this product
Rated 5 out of 5
Review posted

Fantastic for Miniature Pinning

Used to pin larger miniatures to flying bases. Worked amazingly

Loading...
Was this helpful?
Reviewed by jan
I recommend this product
Rated 5 out of 5
Review posted

Excellent service

Fast delivery

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Was this helpful?
Reviewed by Sam
I recommend this product
Rated 5 out of 5
Review posted

4mm N24

Done the job and solved the problem perfectly!!

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Was this helpful?
Reviewed by Ron
I recommend this product
Rated 5 out of 5
Review posted

Exactly as advertised.

Exactly as advertised. Supplied safety sheet is a good addition.

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Was this helpful?