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1″ dia. x 1/4″ thick Plastic Coated Neodymium Magnet Disc N42

/1″ dia. x 1/4″ thick Plastic Coated Neodymium Magnet Disc N42
  • 1″-dia-x-1-4″-thick-plastic-coated-neodymium-magnet-disc-N42

PCDNM-AD Series 1″ dia. x 1/4″ thick (220mm x 6mm) Disc Plastic Coated N42 Neodymium Rare Earth Magnet, Plastic Plated Powerful Neo Magnet, Polypropylen / ABS Plastic Coating Round Strong NdFeB Magnet

Part No.: PCDNM-AD Series
Size: 1″ diameter x 1/4″ thick (22 mm x 6 mm)
Material: Neodymium (NdFeB, NIB)
Magnet Grade: N42
Magnet Shape: Disc, Round
Color: Green / Blue / Red / White / Black / Yellow
Plating/Coating: Ni-Cu-Ni-Plastic
Max Operating Temp: 176ºF (80ºC)
Tolerances: ±0.004″ x ±0.004″
Magnetization Direction: Magnetized Axial Through Thickness (Poles on Flat Ends)
**Magnet size is prior to plastic coating

What are the advantages and disadvantages of plastic encased magnets?
The biggest drawback to Neodymium magnets is while magnetically very strong, they are very physically fragile. Tough coatings, such as nickel, go a long way toward protecting the magnets from cracks and breakage. However, after repeated impacts with each other or other surfaces, even the best metal coatings will fail. Plastic coatings offer an impact and corrosion protection for the fragile magnets inside. These magnets can sustain far more punishment than the standard metal coated magnets, making these a good play or experimention magnet. However, on the negative side, this relatively thick coating reduces the effective power of the magnet due to the logarithmic drop in magnet strength as the distance increases from the surface of magnet. How much of a difference? 2 standard nickel coated 3/4 x 1/8″ N48 disc magnets will pull at each other with about 9 pounds of force. Two 3/4 x 1/8″ N48 plastic coated will only pull with about 5 pounds of force. That is 45% less strength. So it is a trade-off. If you require maximum power, go with metal coated: if you plan on playing with neodymium magnets A LOT these are the magnets for you!

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Technical specifications for magnetization grade N42

Material Remanence Coercivity Energy product Maximum temperature
Br bHc iHc (BxH)max
kG T kOe kA/m kOe kA/m MGOe kJ/m3 °C
N42 12.9-13.2 1.29-1.32 10.8-12.0 860-955 ≥  12 ≥  955 40-42 318-334 ≤  80


Part No. Grade Coating Dimensions Magnet Type Color Magnetization
PCDNM-AD01 N42 Plastic 1″ dia. x 1/4″ thick Disc Neodymium Magnet Black Magnetized Axially Through the Thickness
PCDNM-AD02 N42 Red
PCDNM-AD03 N42 White
PCDNM-AD04 N42 Blue
PCDNM-AD05 N42 Yellow
PCDNM-AD06 N42 Green
PCDNM-BD01 N48 Black
PCDNM-BD02 N48 Red
PCDNM-BD03 N48 White
PCDNM-BD04 N48 Blue
PCDNM-BD05 N48 Yellow
PCDNM-BD06 N48 Green

Disc Axial

Disc Plastic Coated N42 Neodymium Rare Earth Magnet

Disc Plastic Coated N42 Neodymium Rare Earth Magnet