Neodymium Disc Magnet - 4mm x 3mm | N50

Product code: D-D4H3-N50

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Neodymium Disc Magnet - 4mm x 3mm | N50

Rated 5.0 out of 5
Based on 3 reviews
Product Code D-D4H3-N50
Pull Force* 535 grams
Weight 3 gm
Style Neodymium DISC
Coating Nickel
Direction of Magnetisation Axially through height
Dimensions Height:3mm, Diameter:4mm

Magnetic Product Description:

This neodymium magnetic disc has a diameter of 4mm and a height of 3mm. It has a magnetic flux reading of 6029 Gauss and a pull force of 0.535 kilos. It is identified by the AMF magnet part number D-D4H3-N50.

Uses for our rare earth disc magnets:

This little Rare Earth disc magnet is surprisingly versatile, with applications that range from industrial and scientific through to home hobbyists. Since the discovery of Neodymium in the mid 1980s, many industries have seen a revolution due to the implications of replacing traditional magnets with Rare Earth magnets. The additional strength and reduced mass of Neodymium magnetic material have allowed many products to be scaled down, this is particularly prevalent in technology based fields such as computers, telecommunications and medical devices. Small round magnets are also commonly used in hobbies like paper crafts, figurines, game makers and woodworkers as they provide a simple means of attaching and securing. Displaying handmade items is often difficult to achieve without compromising the design, however tiny magnets such as these are easily hidden or disguised. 

Neodymium Disc Magnet - 4mm x 3mm | N50 (D-D4H3-N50)

Grade
N50 N/A
Max Operating Temperature °C
<=80 N/A
Remanence
1.4-1.46 N/A
Coercivity
14-14.6 >=836 N/A
Intrinsic Coercivity
>=10.5 N/A
Max Energy Product
>=875 N/A
Grade N50
Max Operating Temperature °C <=80
Remanence 1.4-1.46
Coercivity 14-14.6 >=836
Intrinsic Coercivity >=10.5
Max Energy Product >=875

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 3 reviews
  • 5 Stars
    3 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
Quality
Rated 5 out of 5
Ease of Use
Rated 5 out of 5
Value
Rated 4 out of 5
Strength
Rated 5 out of 5
3 Reviews
Reviewed by Simon P.
Verified Buyer
I recommend this product
Age Range
55 - 64
Use of product
Arts & Crafts
Rated 5 out of 5
Review posted

Great Service, Great Product

My order of 3mm by 4mm N50 magnets was exactly what I wanted and it arrived in NZ from AUS in a very timely way.

Does exactly what I wanted.. if anything the magnets were stronger than I expected and I need more glue to properly affix them.

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Quality
Rated 5 out of 5
Ease of Use
Rated 5 out of 5
Value
Rated 5 out of 5
Strength
Rated 5 out of 5
Was this helpful?
Reviewed by Suzanne S.
Verified Buyer
I recommend this product
Age Range
45 - 54
Gender
Female
Use of product
Home DIY
Rated 5 out of 5
Review posted

Great

Product arrived promptly and was exactly as I’d hoped.

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Quality
Rated 5 out of 5
Ease of Use
Rated 5 out of 5
Value
Rated 4 out of 5
Strength
Rated 5 out of 5
Was this helpful?
Reviewed by Chris A.
Verified Buyer
I recommend this product
Age Range
35 - 44
Gender
Male
Use of product
Arts & Crafts
Rated 5 out of 5
Review posted

Amazing

Super easy to use, super effective, great service.

Loading...
Quality
Rated 5 out of 5
Ease of Use
Rated 5 out of 5
Value
Rated 5 out of 5
Strength
Rated 5 out of 5
Was this helpful?

Magnetic Product Description:

This neodymium magnetic disc has a diameter of 4mm and a height of 3mm. It has a magnetic flux reading of 6029 Gauss and a pull force of 0.535 kilos. It is identified by the AMF magnet part number D-D4H3-N50.

Uses for our rare earth disc magnets:

This little Rare Earth disc magnet is surprisingly versatile, with applications that range from industrial and scientific through to home hobbyists. Since the discovery of Neodymium in the mid 1980s, many industries have seen a revolution due to the implications of replacing traditional magnets with Rare Earth magnets. The additional strength and reduced mass of Neodymium magnetic material have allowed many products to be scaled down, this is particularly prevalent in technology based fields such as computers, telecommunications and medical devices. Small round magnets are also commonly used in hobbies like paper crafts, figurines, game makers and woodworkers as they provide a simple means of attaching and securing. Displaying handmade items is often difficult to achieve without compromising the design, however tiny magnets such as these are easily hidden or disguised. 

Neodymium Disc Magnet - 4mm x 3mm | N50 (D-D4H3-N50)

Grade
N50 N/A
Max Operating Temperature °C
<=80 N/A
Remanence
1.4-1.46 N/A
Coercivity
14-14.6 >=836 N/A
Intrinsic Coercivity
>=10.5 N/A
Max Energy Product
>=875 N/A
Grade N50
Max Operating Temperature °C <=80
Remanence 1.4-1.46
Coercivity 14-14.6 >=836
Intrinsic Coercivity >=10.5
Max Energy Product >=875

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 3 reviews
  • 5 Stars
    3 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
Quality
Rated 5 out of 5
Ease of Use
Rated 5 out of 5
Value
Rated 4 out of 5
Strength
Rated 5 out of 5
3 Reviews
Reviewed by Simon P.
Verified Buyer
I recommend this product
Age Range
55 - 64
Use of product
Arts & Crafts
Rated 5 out of 5
Review posted

Great Service, Great Product

My order of 3mm by 4mm N50 magnets was exactly what I wanted and it arrived in NZ from AUS in a very timely way.

Does exactly what I wanted.. if anything the magnets were stronger than I expected and I need more glue to properly affix them.

Loading...
Quality
Rated 5 out of 5
Ease of Use
Rated 5 out of 5
Value
Rated 5 out of 5
Strength
Rated 5 out of 5
Was this helpful?
Reviewed by Suzanne S.
Verified Buyer
I recommend this product
Age Range
45 - 54
Gender
Female
Use of product
Home DIY
Rated 5 out of 5
Review posted

Great

Product arrived promptly and was exactly as I’d hoped.

Loading...
Quality
Rated 5 out of 5
Ease of Use
Rated 5 out of 5
Value
Rated 4 out of 5
Strength
Rated 5 out of 5
Was this helpful?
Reviewed by Chris A.
Verified Buyer
I recommend this product
Age Range
35 - 44
Gender
Male
Use of product
Arts & Crafts
Rated 5 out of 5
Review posted

Amazing

Super easy to use, super effective, great service.

Loading...
Quality
Rated 5 out of 5
Ease of Use
Rated 5 out of 5
Value
Rated 5 out of 5
Strength
Rated 5 out of 5
Was this helpful?