NSN0641

Rare Earth Magnet - Disc, 0.5 in. Diameter x 0.25 in. Thick, 8-Count

Rare earth magnets are the strongest type of permanent magnet currently made. They are amazingly powerful for their size and have innumerable uses. These disc magnets are 0.500 inch (12.7mm) diameter and 0.250 inch (6.4mm) thick. They are magnetized through the thickness. They are composed of grade 40 neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. Maximum working temperature is 176 F (80 C).

NSN0641

0.5 inch diameter x 0.25 inch thick

12.7mm diameter x 6.35mm thick

Sintered Neodymium-Iron-Boron (NdFeB)

Disc

Ni-Cu-Ni (Nickel)

Thickness

N40

10.69[4849]

4226

80 Deg C (176 Deg F)

+/-0.005"

8

0.8

6.03

Magcraft

Magpak Tube

875661000412

12.5-12.8 [1.25-1.28]

>=10.9 [>=867]

>=12.0 [>=995]

38-41 [302-326]

>=7.45

600-1200

150-380

460-660

1.05

1.25-1.55

310

6

-1

Part Number

Imperial Dimensions

Metric Dimensions

Material

Shape

Plating

Magnetization Direction

Grade

Pull Force (lbs[g])

Surface Field(G)

Maximum Operating Temperature

Dimensional Tolerance

Magnet Quantity

Volume (cm3)

Weight (g)

Brand

Packaging

UPC

Remanent Flux Density Br (kG [T])

Coercivity HcB (kOe [kA/m])

Intrinsic Coercivity HcJ (kOe [kA/m])

Maximum Energy Product Bhmax (MGOe [kJ/m3])

Density p(g/cm3)

Compression Strength (Mpa)

Bending Strength (Mpa)

Vickers Hardness (HV)

Recoil Permeability (urec)

Electrical Resistance (Ohm*mm2/m)

Curie Temperature Tc (°C)

Thermal Expansion Coefficient 100°C//(x10^-6/K)

Thermal Expansion Coefficient 100°C?(x10^-6/K)

 SPECIFICATIONS