Neodymium Ring Magnet - 12.5mm (dia) x 6mm (H) | North Countersunk Face (C/S 3mm - 6mm)

Product code: 23012B

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Neodymium Ring Magnet - 12.5mm (dia) x 6mm (H) | North Countersunk Face (C/S 3mm - 6mm)

Product Code 23012B
Pull Force* 3.9 kg
Weight 5 gm
Style Rare Earth Ring magnet NTH C/Sunk Face
Gauss 5078
Grade N38
Tolerance +/- 0.05mm
Coating Nickel (NiCuNi)
Direction of Magnetisation Axially magnetised thru the 6mm
Dimensions Outside Diameter:12.5mm, Inside Diameter:3mm, Thickness:6mm
*Measured against up to 10mm mild steel.
Neodymium Ring Magnet - 12.5mm (dia) x 6mm (H) | North Countersunk Face (C/S 3mm - 6mm)

Neodymium Ring Magnet Product Description:

Similar to Disc Magnets in shape, this strong magnetic ring is distinguished by its countersunk hole. This product has an outside diameter of 12.5mm, an inside diameter of 3mm (to 6mm) and a countersunk hole through the north face. It is 6mm thick, providing a compact shape for small areas. This product is super strong for its size with a pull strength of 3.9kg. It is identified by the AMF magnet part number 23012B.

Uses for our Strong Neodymium Magnetic Rings:

Popular with kitchen and bathroom designers/builders, magnets provide easy construction in a concealed manner. Rare Earth Neodymium Ring Magnets are often used as a hidden fixing method for kitchen and bathroom cabinetry, as well as in bench tops. These permanent magnets can create soft door closures in a compact and discreet way. Ring Magnets provide a sophisticated alternative to the four-inch nail. Their magnetic strength is ideal for holding, fixing and releasing of different materials. These materials include stone, timber, ceramics, plastics and fabrics. These ring magnets are also regularly used as fixing methods in school science projects and productions. As well as in advertising and display companies for the purpose of presenting products, services and signage.

Neodymium Ring Magnet - 12.5mm (dia) x 6mm (H) | North Countersunk Face (C/S 3mm - 6mm) (23012B)

Grade
N38 N42
Max Operating Temperature °C
<=80 <=80
Remanence Br(T)
1.23-1.3 1.3-1.35
Remanence Br(kGs)
12.3-13 13-13.5
Coercivity bHc(kA/m)
>=859 >=836
Coercivity bHc(Oe)
>=10.8 >=10.5
Intrinsic Coercivity iHc(kA/m)
>=955 >=955
Intrinsic Coercivity iHc(Oe)
>=12 >=12
Max Energy Product(BH)max(KJ/m)
286-318 318-350
Max Energy Product(BH)max(MGOe)
36-40 40-44
Grade N38 N42
Max Operating Temperature °C <=80 <=80
Remanence Br(T) 1.23-1.3 1.3-1.35
Remanence Br(kGs) 12.3-13 13-13.5
Coercivity bHc(kA/m) >=859 >=836
Coercivity bHc(Oe) >=10.8 >=10.5
Intrinsic Coercivity iHc(kA/m) >=955 >=955
Intrinsic Coercivity iHc(Oe) >=12 >=12
Max Energy Product(BH)max(KJ/m) 286-318 318-350
Max Energy Product(BH)max(MGOe) 36-40 40-44

Neodymium Ring Magnet - 12.5mm (dia) x 6mm (H) | North Countersunk Face (C/S 3mm - 6mm) (23012B)

Curie Temperature
310-370 °C N/A
Maximum Operating Temp.
80-240 °C N/A
Hardness
560-580 Hv N/A
Resistivity
160 μΩ.cm N/A
Density
7.4 g/cm³ N/A
Relative Recoil Permeability
1.05 μ rec N/A
Saturation Field Strength
30-40 kOe N/A
Saturation Field Strength
2,400-3,200 kA/m N/A
Temperature Coefficient of Br
-0.12 ~-0.10 %/°C N/A
Temperature Coefficient of iHc
-0.6 %/°C N/A
Curie Temperature 310-370 °C N/A
Maximum Operating Temp. 80-240 °C N/A
Hardness 560-580 Hv N/A
Resistivity 160 μΩ.cm N/A
Density 7.4 g/cm³ N/A
Relative Recoil Permeability 1.05 μ rec N/A
Saturation Field Strength 30-40 kOe N/A
Saturation Field Strength 2,400-3,200 kA/m N/A
Temperature Coefficient of Br -0.12 ~-0.10 %/°C N/A
Temperature Coefficient of iHc -0.6 %/°C 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.

Neodymium Ring Magnet - 12.5mm (dia) x 6mm (H) | North Countersunk Face (C/S 3mm - 6mm)

Neodymium Ring Magnet Product Description:

Similar to Disc Magnets in shape, this strong magnetic ring is distinguished by its countersunk hole. This product has an outside diameter of 12.5mm, an inside diameter of 3mm (to 6mm) and a countersunk hole through the north face. It is 6mm thick, providing a compact shape for small areas. This product is super strong for its size with a pull strength of 3.9kg. It is identified by the AMF magnet part number 23012B.

Uses for our Strong Neodymium Magnetic Rings:

Popular with kitchen and bathroom designers/builders, magnets provide easy construction in a concealed manner. Rare Earth Neodymium Ring Magnets are often used as a hidden fixing method for kitchen and bathroom cabinetry, as well as in bench tops. These permanent magnets can create soft door closures in a compact and discreet way. Ring Magnets provide a sophisticated alternative to the four-inch nail. Their magnetic strength is ideal for holding, fixing and releasing of different materials. These materials include stone, timber, ceramics, plastics and fabrics. These ring magnets are also regularly used as fixing methods in school science projects and productions. As well as in advertising and display companies for the purpose of presenting products, services and signage.

Neodymium Ring Magnet - 12.5mm (dia) x 6mm (H) | North Countersunk Face (C/S 3mm - 6mm) (23012B)

Grade
N38 N42
Max Operating Temperature °C
<=80 <=80
Remanence Br(T)
1.23-1.3 1.3-1.35
Remanence Br(kGs)
12.3-13 13-13.5
Coercivity bHc(kA/m)
>=859 >=836
Coercivity bHc(Oe)
>=10.8 >=10.5
Intrinsic Coercivity iHc(kA/m)
>=955 >=955
Intrinsic Coercivity iHc(Oe)
>=12 >=12
Max Energy Product(BH)max(KJ/m)
286-318 318-350
Max Energy Product(BH)max(MGOe)
36-40 40-44
Grade N38 N42
Max Operating Temperature °C <=80 <=80
Remanence Br(T) 1.23-1.3 1.3-1.35
Remanence Br(kGs) 12.3-13 13-13.5
Coercivity bHc(kA/m) >=859 >=836
Coercivity bHc(Oe) >=10.8 >=10.5
Intrinsic Coercivity iHc(kA/m) >=955 >=955
Intrinsic Coercivity iHc(Oe) >=12 >=12
Max Energy Product(BH)max(KJ/m) 286-318 318-350
Max Energy Product(BH)max(MGOe) 36-40 40-44

Neodymium Ring Magnet - 12.5mm (dia) x 6mm (H) | North Countersunk Face (C/S 3mm - 6mm) (23012B)

Curie Temperature
310-370 °C N/A
Maximum Operating Temp.
80-240 °C N/A
Hardness
560-580 Hv N/A
Resistivity
160 μΩ.cm N/A
Density
7.4 g/cm³ N/A
Relative Recoil Permeability
1.05 μ rec N/A
Saturation Field Strength
30-40 kOe N/A
Saturation Field Strength
2,400-3,200 kA/m N/A
Temperature Coefficient of Br
-0.12 ~-0.10 %/°C N/A
Temperature Coefficient of iHc
-0.6 %/°C N/A
Curie Temperature 310-370 °C N/A
Maximum Operating Temp. 80-240 °C N/A
Hardness 560-580 Hv N/A
Resistivity 160 μΩ.cm N/A
Density 7.4 g/cm³ N/A
Relative Recoil Permeability 1.05 μ rec N/A
Saturation Field Strength 30-40 kOe N/A
Saturation Field Strength 2,400-3,200 kA/m N/A
Temperature Coefficient of Br -0.12 ~-0.10 %/°C N/A
Temperature Coefficient of iHc -0.6 %/°C 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.