Material: NdFeB
Shape: Ring
Measurements (Size): D20xd10/5x3 mm
Tolerance: +/- 0.1 mm
Coating: (Ni-Cu-Ni)
Magnetisation: N42 3 mm per height
Strength: approx. 5 Kg
Max working temp. (Max. working temperature): 80°C
Weight: 10 g

We have with S and N poles to attract each other, if you need magnets with different poles, please choose;

Properties of magnetic material N42: remanencja Br 1.28-1.32 [T] Coercja HCB min. 923 [kA / m], Coercja HcJ min. 955 [kA / m], energy product (BH) max 318-342 [kJ/m3].
Physical Properties: Density ~ 7.5 [g/cm3], Vickers (HV) ~ 600 [kg/mm2], Resistivity ~ 144 [uOhm x]
The maximum operating temperature is 80 ° [C].
Curie temperature is ~ 310 ° [C].Temperature coefficient of remanent magnetization TK (br): approximately -0.12% / ° [C]. .
Magnetic flux: ~ 5300 x 10-3 [mWb], K (Helmholtz coil constant) = 1.14 × 10-4 [m]
Magnetic moment: ~ 5300 x 10-3 [mWb] × 1.14 × 10-4 [m] ~ = 604.20 x 10-6 [mWb] × [m]
Magnetic flux density 0.7 [mm] The distance from the magnetic surface is ~ 0.250 [T]