Neodymium Disc Magnet - 25.4mm x 12.7mm

Product code: 20005

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Neodymium Disc Magnet - 25.4mm x 12.7mm

Rated 4.0 out of 5
Based on 1 review
Product Code 20005
Pull Force* 18 kg
Weight 48 gm
Style Rare Earth Disc magnet
Gauss 4450
Grade N38
Coating Nickel (NiCuNi)
Direction of Magnetisation Axially magnetised
Dimensions Height:12.7mm, Diameter:25.4mm
*Measured against up to 10mm mild steel.
Neodymium Disc Magnet - 25.4mm x 12.7mm

Magnetic Product Description:

This rare earth disc has a diameter of 25.4mm and a height of 12.7mm. It has a magnetic flux reading of 4450 Gauss and a pull force of 18kg. It is identified by the AMF magnet part number 20005


Uses for our rare earth disc magnets:

On a recent visit to a water treatment company website that use magnets, including these neodymium disc magnets (product code 20005), we were struck by the usefulness of magnets and water purification.

Using powerful magnets, this Australian company has designed and built devices for treating water with serious problems, whether in the home or heavy and light industry. (For an example of AMF working with the coal industry on water treatment issues read our feature article on the Magnetic Grate Assembly).

The device that captured our imagination on this occasion was an impressively muscular looking contraption about the size of a telephone book. It is very securely, tightly clamped around the outside of a polyethylene (common) water pipe, 50mm in diameter.

The powerful magnets, applying their force through the pipe surface, literally break down undesirable molecules in the water. These undesirables include heavy metals, salt and scale among others. Scale, (incrustation inside boiler) is rust to you and I.

Note well, this device dismantles impure molecules in the water using powerful magnet force without breaching the fabric or material surface of the plumbing system or its associated apparatus. This purification can turn hard water into soft water, prolonging the life of all surfaces and appliances in contact with the water and improving the wellbeing of plants and animals ingesting the water. Magnets and water purification go very well together indeed.

Neodymium Disc Magnet - 25.4mm x 12.7mm (20005)

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 4.0 out of 5
Based on 1 review
  • 5 Stars
    0 Reviews
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    1 Review
  • 3 Stars
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  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
1 Review
Reviewed by Sav
I recommend this product
Rated 4 out of 5
Review posted

Very good product

Bought this for my prospecting

Attached to my pick and it saves heaps of time sorting out the rubbish metals from the gold

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Neodymium Disc Magnet - 25.4mm x 12.7mm

Magnetic Product Description:

This rare earth disc has a diameter of 25.4mm and a height of 12.7mm. It has a magnetic flux reading of 4450 Gauss and a pull force of 18kg. It is identified by the AMF magnet part number 20005


Uses for our rare earth disc magnets:

On a recent visit to a water treatment company website that use magnets, including these neodymium disc magnets (product code 20005), we were struck by the usefulness of magnets and water purification.

Using powerful magnets, this Australian company has designed and built devices for treating water with serious problems, whether in the home or heavy and light industry. (For an example of AMF working with the coal industry on water treatment issues read our feature article on the Magnetic Grate Assembly).

The device that captured our imagination on this occasion was an impressively muscular looking contraption about the size of a telephone book. It is very securely, tightly clamped around the outside of a polyethylene (common) water pipe, 50mm in diameter.

The powerful magnets, applying their force through the pipe surface, literally break down undesirable molecules in the water. These undesirables include heavy metals, salt and scale among others. Scale, (incrustation inside boiler) is rust to you and I.

Note well, this device dismantles impure molecules in the water using powerful magnet force without breaching the fabric or material surface of the plumbing system or its associated apparatus. This purification can turn hard water into soft water, prolonging the life of all surfaces and appliances in contact with the water and improving the wellbeing of plants and animals ingesting the water. Magnets and water purification go very well together indeed.

Neodymium Disc Magnet - 25.4mm x 12.7mm (20005)

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 4.0 out of 5
Based on 1 review
  • 5 Stars
    0 Reviews
  • 4 Stars
    1 Review
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
1 Review
Reviewed by Sav
I recommend this product
Rated 4 out of 5
Review posted

Very good product

Bought this for my prospecting

Attached to my pick and it saves heaps of time sorting out the rubbish metals from the gold

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Was this helpful?