Reviewed by MICK
I recommend this product
BRIAN TAYLOR MOSQUITO
VERY GOOD USED THEM ON SIDE OF MILLING MACHINE TO HOLD AIRLINE IN PLACE
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Neodymium Block Magnet - 20mm x 12mm x 5mm | with 4.5mm hole
Product code: 22021D
$10.64for 1 to 9 items
$8.67buy 10 to 99 itemsand
save 19%
$7.59buy 100+ itemsand
save 29%
Neodymium Block Magnet - 20mm x 12mm x 5mm | with 4.5mm hole
Rated 5.0 out of 5
Product Code
22021D
Pull Force*
5 kg
Weight
9 gm
Style
Neodymium Block magnet
Coating
Nickel (NiCuNi)
Direction of Magnetisation
Axially magnetised
Dimensions
Width:12mm, Height:5mm, Length:20mm
Magnetic Product Description:
This rare earth magnet has a length of 20mm, a width of 12mm and a thickness of 5mm. It has a magnetic flux reading of 3335 gauss and an approx: pull force of 5kg. It is identified by the AMF magnet part number 22021D. Like the epoxy coated magnet of similar size this magnet has a 4.5mm hole centred thru the magnet.
Uses for our rare earth block magnets:
This handy Neodymium magnet can be used by maintenance workers, builders, steel fabricators and hobbyists. It has a Nickel coating and a 4.5mm diameter hole in the centre which enables it to be attached to any non-magnetic surface using screws or even by stitching with cotton or using string. It has various uses including door and drawer closers, metal recovery and situations where magnetic grip is temporarily needed.
Neodymium Block Magnet - 20mm x 12mm x 5mm | with 4.5mm hole (22021D)
| Grade | |
|---|---|
| N38 | N/A |
| Max Operating Temperature °C | |
| <=80 | N/A |
| Remanence | |
| 1.09-1.17 | N/A |
| Coercivity | |
| 12.3-13>=859 | N/A |
| Intrinsic Coercivity | |
| >=10.8 | N/A |
| Max Energy Product | |
| >=955 | N/A |
| Grade | N38 |
| Max Operating Temperature °C | <=80 |
| Remanence | 1.09-1.17 |
| Coercivity | 12.3-13>=859 |
| Intrinsic Coercivity | >=10.8 |
| Max Energy Product | >=955 |
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.
Magnetic Product Description:
This rare earth magnet has a length of 20mm, a width of 12mm and a thickness of 5mm. It has a magnetic flux reading of 3335 gauss and an approx: pull force of 5kg. It is identified by the AMF magnet part number 22021D. Like the epoxy coated magnet of similar size this magnet has a 4.5mm hole centred thru the magnet.
Uses for our rare earth block magnets:
This handy Neodymium magnet can be used by maintenance workers, builders, steel fabricators and hobbyists. It has a Nickel coating and a 4.5mm diameter hole in the centre which enables it to be attached to any non-magnetic surface using screws or even by stitching with cotton or using string. It has various uses including door and drawer closers, metal recovery and situations where magnetic grip is temporarily needed.
Neodymium Block Magnet - 20mm x 12mm x 5mm | with 4.5mm hole (22021D)
| Grade | |
|---|---|
| N38 | N/A |
| Max Operating Temperature °C | |
| <=80 | N/A |
| Remanence | |
| 1.09-1.17 | N/A |
| Coercivity | |
| 12.3-13>=859 | N/A |
| Intrinsic Coercivity | |
| >=10.8 | N/A |
| Max Energy Product | |
| >=955 | N/A |
| Grade | N38 |
| Max Operating Temperature °C | <=80 |
| Remanence | 1.09-1.17 |
| Coercivity | 12.3-13>=859 |
| Intrinsic Coercivity | >=10.8 |
| Max Energy Product | >=955 |
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.