Neodymium Disc - 20mm x 3mm

Product code: 20018

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Neodymium Disc - 20mm x 3mm

Rated 5.0 out of 5
Based on 7 reviews
Product Code 20018
Pull Force* 4.3 kg
Weight 7 gm
Style Rare Earth Disc magnet
Gauss 1810
Grade N42
Coating Nickel (NiCuNi)
Direction of Magnetisation Axially magnetised
Dimensions Height:3mm, Diameter:20mm
*Measured against up to 10mm mild steel.
Neodymium Disc - 20mm x 3mm

Neodymium Rare Earth Disc Magnet Product Description:

This powerful Neodymium Disc Magnet has a diameter of 20mm and a height of 3mm. For extended use and corrosion resistance, this Neo Disc has a Nickel Coating. Powerful Rare Earth magnets allow this disc for an extremely strong magnetic strength for its size. It has a magnetic flux reading of 1810 Gauss and a pull strength of 4.3kg. 


Uses for our Neodymium Rare Earth Magnetic Disc:

Versatile and convenient, these small-sized Neo Disc Magnets make them some of the most popular in our stock! Used in a diverse range of applications, this permanent magnet is an all-rounder. From engineering disciplines to at-home DIY, there is always a need for this compact, yet efficient magnet.
Our range of small magnetic discs is frequently used for lifting, holding and separation. Use this product to collect ferrous metal debris, for metal separation and for water conditioning.

Neodymium Disc - 20mm x 3mm (20018)

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 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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Neodymium Disc - 20mm x 3mm

Neodymium Rare Earth Disc Magnet Product Description:

This powerful Neodymium Disc Magnet has a diameter of 20mm and a height of 3mm. For extended use and corrosion resistance, this Neo Disc has a Nickel Coating. Powerful Rare Earth magnets allow this disc for an extremely strong magnetic strength for its size. It has a magnetic flux reading of 1810 Gauss and a pull strength of 4.3kg. 


Uses for our Neodymium Rare Earth Magnetic Disc:

Versatile and convenient, these small-sized Neo Disc Magnets make them some of the most popular in our stock! Used in a diverse range of applications, this permanent magnet is an all-rounder. From engineering disciplines to at-home DIY, there is always a need for this compact, yet efficient magnet.
Our range of small magnetic discs is frequently used for lifting, holding and separation. Use this product to collect ferrous metal debris, for metal separation and for water conditioning.

Neodymium Disc - 20mm x 3mm (20018)

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 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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