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6 X 6 X 2,5 / N38 – NDFEB (NEODYMIUM) MAGNET

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6 X 6 X 2,5 / N38 – NDFEB (NEODYMIUM) MAGNET

PERFORMANCE PARAMETERS
Length
6 [mm] +0,1/-0,1
Width
6 [mm] +0,1/-0,1
Height
2,5 [mm] +0,1/-0,1
magnetizing direction along dimension
2,5 [mm]
Direction of magnetization along the height (the last dimension included in a magnet name) means that the surface of a magnet perpendicular to its height makes the N-pole, while the other surface perpendicular to the height refers to the S-pole;.
Material
Neodymium
Grade
N38
Maximum working temperature
80 °[C]
For flat magnets and magnets mounted in the open magnetic circuit working temperature may be insignificantly lower. For high magnets and magnets mounted in the closed magnetic circuit working temperature equals max. working temperature for a given material. Curie’s temperature is ~ 310°[C]. Temperature coefficient of remanence TK(Br: approx. ~0,12 %/°[C]. Temperature coefficient of coercivity TK(HcJ): approx. -0,6 %/°[C].
Coating
Nickel (NiCuNi)
Sintered neodymium magnets are brittle (fragile). A neodymium magnet without housing could break after an impact with another strong magnet.
Weight
0,68 [g]
All the numbers quoted were obtained as a result of tests with one specific item in a room temperature and are intended to serve for comparison of practical magnetic properties of magnets offered by the shop.

MAGNETIC PROPERTIES OF MATERIAL GRADE N38

remanence Br 1,21 – 1,25 [T]
coercivity HcB min. 899 [kA/m]
coercivity HcJ min. 955 [kA/m]
energy product (BH)max 286 – 302 [kJ/m3]
Magnetic properties of a particular material, together with its shape, volume, max. working temperature and direction of magnetization have influence on practical magnetic properties of a magnet.
As an example, you will find attached a graph of a course of the II quadrant of magnetic hysteresis loop for a material grade N38.

PHYSICAL PROPERTIES

density ~7,5 [g/cm3]
Vickers’ hardness (HV) ~600 [kg/mm2]
resistivity ~144 [uOhm x cm]

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