Neodymium Disc Magnet - 3mm x 2mm | Gold Coating

Product code: 20089

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Neodymium Disc Magnet - 3mm x 2mm | Gold Coating

Rated 5.0 out of 5
Based on 2 reviews
Product Code 20089
Pull Force* .200 kg
Weight 1 gm
Style Rare Earth Disc magnet Gold
Gauss 5040
Grade N38
Coating Gold
Direction of Magnetisation Axially magnetised
Dimensions Height:2mm, Diameter:3mm
*Measured against up to 10mm mild steel.
Neodymium Disc Magnet - 3mm x 2mm | Gold Coating

Magnetic Product Description:

This gold coated rare earth disc has a diameter of 3mm and a height of 2mm. It has a magnetic flux reading of 5040 Gauss and a pull force of 200 grams. Its AMF magnet part number is 20089.


Uses for our rare earth disc magnets:

This delicate but strong Gold Coated Neodymium Disc is one of our smallest magnets and appeals to those wanting a more refined appearance. Museums, galleries and exhibitors often choose these gold plated magnets as they add a more sophisticated element to a display. Craftspeople and hobbyists find this disc useful as a clasp and model fixing purposes. There are many functional benefits provided by the gold plating due to its unique properties including corrosion-resistance and thermal and electrical conduction. These properties make them suitable for many specialised applications such as componentry in electric devices that form part of security equipment including warning systems and monitoring devices.

Neodymium Disc Magnet - 3mm x 2mm | Gold Coating (20089)

Grade
N38 N/A
Max Operating Temperature °C
<=80 N/A
Remanence Br(T)
1.23-1.3 N/A
Remanence Br(kGs)
12.3-13 N/A
Coercivity bHc(kA/m)
>=859 N/A
Coercivity bHc(Oe)
>=10.8 N/A
Intrinsic Coercivity iHc(kA/m)
>=955 N/A
Intrinsic Coercivity iHc(Oe)
>=12 N/A
Max Energy Product(BH)max(KJ/m)
286-318 N/A
Max Energy Product(BH)max(MGOe)
36-40 N/A
Grade N38 N/A
Max Operating Temperature °C <=80 N/A
Remanence Br(T) 1.23-1.3 N/A
Remanence Br(kGs) 12.3-13 N/A
Coercivity bHc(kA/m) >=859 N/A
Coercivity bHc(Oe) >=10.8 N/A
Intrinsic Coercivity iHc(kA/m) >=955 N/A
Intrinsic Coercivity iHc(Oe) >=12 N/A
Max Energy Product(BH)max(KJ/m) 286-318 N/A
Max Energy Product(BH)max(MGOe) 36-40 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 2 reviews
  • 5 Stars
    2 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
2 Reviews
Reviewed by Geoff
I recommend this product
Rated 5 out of 5
Review posted

Great for the intended task

I had to find a way of temporarily fixing a wood panel to a "cutaway" model of a type of machine, the wood panel had to be quickly removable and replaceable so screws were out. The micro magnets are perfect and do not intrude on the visual aspects of the wood but hold the panel in place firmly.

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

Bathroom vanity mirror

Excellent product... We had a very old photo frame that we painted white, put a mirror in and use it as our bathroom mirror over a recessed cavity, the magnets have been used to keep the mirror closed - works well...

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Neodymium Disc Magnet - 3mm x 2mm | Gold Coating

Magnetic Product Description:

This gold coated rare earth disc has a diameter of 3mm and a height of 2mm. It has a magnetic flux reading of 5040 Gauss and a pull force of 200 grams. Its AMF magnet part number is 20089.


Uses for our rare earth disc magnets:

This delicate but strong Gold Coated Neodymium Disc is one of our smallest magnets and appeals to those wanting a more refined appearance. Museums, galleries and exhibitors often choose these gold plated magnets as they add a more sophisticated element to a display. Craftspeople and hobbyists find this disc useful as a clasp and model fixing purposes. There are many functional benefits provided by the gold plating due to its unique properties including corrosion-resistance and thermal and electrical conduction. These properties make them suitable for many specialised applications such as componentry in electric devices that form part of security equipment including warning systems and monitoring devices.

Neodymium Disc Magnet - 3mm x 2mm | Gold Coating (20089)

Grade
N38 N/A
Max Operating Temperature °C
<=80 N/A
Remanence Br(T)
1.23-1.3 N/A
Remanence Br(kGs)
12.3-13 N/A
Coercivity bHc(kA/m)
>=859 N/A
Coercivity bHc(Oe)
>=10.8 N/A
Intrinsic Coercivity iHc(kA/m)
>=955 N/A
Intrinsic Coercivity iHc(Oe)
>=12 N/A
Max Energy Product(BH)max(KJ/m)
286-318 N/A
Max Energy Product(BH)max(MGOe)
36-40 N/A
Grade N38 N/A
Max Operating Temperature °C <=80 N/A
Remanence Br(T) 1.23-1.3 N/A
Remanence Br(kGs) 12.3-13 N/A
Coercivity bHc(kA/m) >=859 N/A
Coercivity bHc(Oe) >=10.8 N/A
Intrinsic Coercivity iHc(kA/m) >=955 N/A
Intrinsic Coercivity iHc(Oe) >=12 N/A
Max Energy Product(BH)max(KJ/m) 286-318 N/A
Max Energy Product(BH)max(MGOe) 36-40 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 2 reviews
  • 5 Stars
    2 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
2 Reviews
Reviewed by Geoff
I recommend this product
Rated 5 out of 5
Review posted

Great for the intended task

I had to find a way of temporarily fixing a wood panel to a "cutaway" model of a type of machine, the wood panel had to be quickly removable and replaceable so screws were out. The micro magnets are perfect and do not intrude on the visual aspects of the wood but hold the panel in place firmly.

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

Bathroom vanity mirror

Excellent product... We had a very old photo frame that we painted white, put a mirror in and use it as our bathroom mirror over a recessed cavity, the magnets have been used to keep the mirror closed - works well...

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Was this helpful?