Neodymium Disc Magnet - 20mm x 3mm | N42 | Epoxy Coating

Product code: 20018A

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Neodymium Disc Magnet - 20mm x 3mm | N42 | Epoxy Coating

Rated 5.0 out of 5
5 Reviews
Product Code 20018A
Pull Force* 4.3 kg
Weight 7 gm
Style Rare Earth Disc magnet
Coating Epoxy
Dimensions Height:3mm, Diameter:20mm

Magnetic Product Description:

This rare earth disc has a diameter of 20mm and a height of 3mm. It has a magnetic flux reading of 1810 Gauss and a pull force of 4.3kg. It is identified by the AMF magnet part number 20018A.

Uses for our rare earth disc magnets:

The Epoxy Coating prevents damage to both the magnet and the surface it is attached to. This coating also protects the magnet and the surface it is attached to from corrosion or magnetic degradation that results from exposure to the weather.They can be used alongside other plastic material to disguise their presence and invoke a sense of mystery or magical power. These coated disc magnets are a practical choice for outdoor use.

The N42 Grade of magnetism compensates for the weaker adhesive power caused by the coatings intrusion between two surfaces.

Neodymium Disc Magnet - 20mm x 3mm | N42 | Epoxy Coating (20018A)

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 5 reviews
  • 5 Stars
    5 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
5 Reviews
Reviewed by ES
I recommend this product
Rated 5 out of 5
Review posted

Review on 20mm x 3mm epoxy magnets

Very happy with the fast delivery and strength of these magnets. I used them for a fashion project recently and were the perfect strength and size. I particularly liked that these were black in colour

(better suited my garment) as opposed to the standard silver colour. Highly recommend these magnets, especially if being used for a fashion-garment related project!

Thankyou!

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

Fast service

Quick and fast delivery, perfect use to hold open heavy tool box lid.

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

It was good

I bought it for my science project and it was very good

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Reviewed by Iain H.
I recommend this product
Rated 5 out of 5
Review posted

Just perfect for my application

I needed a way to support a few flags up against a wall, the wall fortunately had a steel cross-member that makes up the lintel on a few doors, solution use magnets, needed strong ones to ensure nothing moves, these were perfect.

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Reviewed by M. K.
I recommend this product
Rated 5 out of 5
Review posted

Excellent magnets very fast delivery.

I buy magnets for an assortment of craft projects. I have bout a lot of every type and size. The selection was very good and the magnets were exactly what I was looking for. Thanks.

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Magnetic Product Description:

This rare earth disc has a diameter of 20mm and a height of 3mm. It has a magnetic flux reading of 1810 Gauss and a pull force of 4.3kg. It is identified by the AMF magnet part number 20018A.

Uses for our rare earth disc magnets:

The Epoxy Coating prevents damage to both the magnet and the surface it is attached to. This coating also protects the magnet and the surface it is attached to from corrosion or magnetic degradation that results from exposure to the weather.They can be used alongside other plastic material to disguise their presence and invoke a sense of mystery or magical power. These coated disc magnets are a practical choice for outdoor use.

The N42 Grade of magnetism compensates for the weaker adhesive power caused by the coatings intrusion between two surfaces.

Neodymium Disc Magnet - 20mm x 3mm | N42 | Epoxy Coating (20018A)

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 5 reviews
  • 5 Stars
    5 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
5 Reviews
Reviewed by ES
I recommend this product
Rated 5 out of 5
Review posted

Review on 20mm x 3mm epoxy magnets

Very happy with the fast delivery and strength of these magnets. I used them for a fashion project recently and were the perfect strength and size. I particularly liked that these were black in colour

(better suited my garment) as opposed to the standard silver colour. Highly recommend these magnets, especially if being used for a fashion-garment related project!

Thankyou!

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

Fast service

Quick and fast delivery, perfect use to hold open heavy tool box lid.

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

It was good

I bought it for my science project and it was very good

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

Just perfect for my application

I needed a way to support a few flags up against a wall, the wall fortunately had a steel cross-member that makes up the lintel on a few doors, solution use magnets, needed strong ones to ensure nothing moves, these were perfect.

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

Excellent magnets very fast delivery.

I buy magnets for an assortment of craft projects. I have bout a lot of every type and size. The selection was very good and the magnets were exactly what I was looking for. Thanks.

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Was this helpful?