Neodymium Disc Magnet - 20mm x 3mm

Product code: 20018

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$3.51buy 100+ itemsand save 35%

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Neodymium Disc Magnet - 20mm x 3mm

Rated 5.0 out of 5
7 Reviews
Product Code 20018
Pull Force* 4.3 kg
Weight 7 gm
Style Rare Earth Disc magnet
Coating Nickel (NiCuNi)
Direction of Magnetisation Axially magnetised
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 20018.

Uses for our rare earth disc magnets:

Companies designing and fabricating components for the aviation industry mean it when they offer to help get your project off the ground and safely back down again. While many of these companies operate with modern materials and advanced technologies they never stray too far from reality.

They know the simpler the design, using well-established manufacturing techniques and testing principles, the better the build cost and product predictability. For these reasons, neodymium disc magnets are found throughout the design and build areas of the aviation industry. They provide permanent and constant power which are appealing properties to anyone averse to risk.

Magnetism is a well-known technology, yet is finding new applications that use its power to help designers solve difficulties with modern or advanced technology. Magnets conform to the preferred and established testing principles and a magnets characteristics like pull force and weight are predictable and easy to confirm. Magnets have achieved a trusted and established reputation in traditional manufacturing techniques and in complex aviation systems, where getting off the ground and back down again safely is everything, engineers are more than sure magnets will do their job. In fact, they're positive, and in Aviation that’s a very important difference.

These N42 Grade Discs give out increased Magnetic Energy from the same dimensioned magnet.This means more holding strength from the same weight item which is very important in terms of Aviation principles.

Neodymium Disc Magnet - 20mm x 3mm (20018)

Grade
N42 N/A
Max Operating Temperature °C
<=80 N/A
Remanence
1.3-1.35 N/A
Coercivity
13-13.5>=836 N/A
Intrinsic Coercivity
>=10.5 N/A
Max Energy Product
>=955 N/A
Grade N42
Max Operating Temperature °C <=80
Remanence 1.3-1.35
Coercivity 13-13.5>=836
Intrinsic Coercivity >=10.5
Max Energy Product >=955

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 7 reviews
  • 5 Stars
    7 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
7 Reviews
Reviewed by Prof
I recommend this product
Rated 5 out of 5
Review posted

Good strong magnets

Timely arrival, packed well, as ordered.

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

this is a stickup!

strong magnets that do what magnets do.I have sewn them into each corner of a car windsreen shade to be used as a window privacey screen in or motorhome,(quick to use and completely adjustable,

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Reviewed by R.C
I recommend this product
Rated 5 out of 5
Review posted

100% Quality

Very strong for their small size. Perfect for my need, small, light weight, strong holding. Great company to buy from. Fantastic helpful staff.

100% effort in safe packaging. I've never received a broken or chipped magnetic disc.

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Reviewed by Mrs S.
I recommend this product
Rated 5 out of 5
Review posted

Excellent product, excellent service

Couldn't have received better service. Thanks

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

Great for Nosework

Used to secure Nosework tins while scent training my dog. Strong and reliable. The product was sent and received in a timely manner. Can't fault the service.

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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 20018.

Uses for our rare earth disc magnets:

Companies designing and fabricating components for the aviation industry mean it when they offer to help get your project off the ground and safely back down again. While many of these companies operate with modern materials and advanced technologies they never stray too far from reality.

They know the simpler the design, using well-established manufacturing techniques and testing principles, the better the build cost and product predictability. For these reasons, neodymium disc magnets are found throughout the design and build areas of the aviation industry. They provide permanent and constant power which are appealing properties to anyone averse to risk.

Magnetism is a well-known technology, yet is finding new applications that use its power to help designers solve difficulties with modern or advanced technology. Magnets conform to the preferred and established testing principles and a magnets characteristics like pull force and weight are predictable and easy to confirm. Magnets have achieved a trusted and established reputation in traditional manufacturing techniques and in complex aviation systems, where getting off the ground and back down again safely is everything, engineers are more than sure magnets will do their job. In fact, they're positive, and in Aviation that’s a very important difference.

These N42 Grade Discs give out increased Magnetic Energy from the same dimensioned magnet.This means more holding strength from the same weight item which is very important in terms of Aviation principles.

Neodymium Disc Magnet - 20mm x 3mm (20018)

Grade
N42 N/A
Max Operating Temperature °C
<=80 N/A
Remanence
1.3-1.35 N/A
Coercivity
13-13.5>=836 N/A
Intrinsic Coercivity
>=10.5 N/A
Max Energy Product
>=955 N/A
Grade N42
Max Operating Temperature °C <=80
Remanence 1.3-1.35
Coercivity 13-13.5>=836
Intrinsic Coercivity >=10.5
Max Energy Product >=955

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 7 reviews
  • 5 Stars
    7 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
7 Reviews
Reviewed by Prof
I recommend this product
Rated 5 out of 5
Review posted

Good strong magnets

Timely arrival, packed well, as ordered.

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

this is a stickup!

strong magnets that do what magnets do.I have sewn them into each corner of a car windsreen shade to be used as a window privacey screen in or motorhome,(quick to use and completely adjustable,

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

100% Quality

Very strong for their small size. Perfect for my need, small, light weight, strong holding. Great company to buy from. Fantastic helpful staff.

100% effort in safe packaging. I've never received a broken or chipped magnetic disc.

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

Excellent product, excellent service

Couldn't have received better service. Thanks

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

Great for Nosework

Used to secure Nosework tins while scent training my dog. Strong and reliable. The product was sent and received in a timely manner. Can't fault the service.

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Was this helpful?