Remag (NdFeB)

Neodymium Iron Boron (NdFeB) Magnets

Sintered NdFeB (Neodymium Iron Boron) magnets belong to a group of Rare-Earth magnets and have greatest attractive force (remanence) and great consistency (coercivity). They are produced via sintering technique and are either pressed isostatically in an oil or in axially/transversally in a pressing tool. Finally they can be further machined to precise dimensions. They suffer from low corrosion resistance therefore require long-term or short-term surface corrosion protection according to its use in application. These magnets are produced according to customer specifications and can be found in a variety of applications including high performance motors, brushless DC motors, magnetic separation, magnetic resonance imaging, sensors and loudspeakers.

sumarium

NdFeB advantages

EXCELLENT MAGNETIC

FUNCTION/DIMENSIONS RATIO

VERY HIGH

(BH) MAX

HIGH

Br

PHYSICAL PROPERTIES

Characteristic [Unit] Remag
26 A
Remag
28 A
Remag 31 A Remag 26 T Remag
28 T
Remag 31 T
Density [g/cm3] 7,65 7,65 7,5 7,65 7,65 7,65
Elasticity Modulus [kN/mm2] 159 150 150 150 150 150
Bending Strength [N/mm2] 180 180 250 180 180 180
Compression Strength [N/mm2] 850 850 1000 850 850 850
Hardness [HRc] 550 550 550 550 550 550
Specific electrical resistance [μΩcm] 16 16 16 16 16 16
Specific heat [J/kgK] 440 440 440 440 440 440
Specific thermal conductivity [W/mK] 9 9 9 9 9 9
Curie temperature [°C] 340 340 310 340 340 340
Temperature Coefficient—TK Br [%/K] 0,5 -0,085 -0,12 0,08 -0,095 -0,095
Temperature Coefficient—TK Br [%/K] -0,14 -0,55 -0,7 0,5 -0,55 -0,55
Required magnetising strenght [kA/m] 2500 250 2500 2500 2500 2500
Max. working temperature [°C] 210 200 180 210 200 180

MAGNETIC PROPERTIES

REMAG
Typical values
Remanence Br
[T]
Corecivity HcB
[kA/m]
Instrinsic Corecivity
HcJ [kA/m]
Energy product (BH)max
[kJ/m3]
Remag 26 A 0,08 810 > 2250 220
Remag 28 A 1,13 860 > 220 230
Remag 31 A 1,16 880 > 2000 250
Remag 26 A 1,13 860 > 2550 240
Remag 28 T 1,17 905 > 2200 255
Remag 31 T 1,21 930 > 2000 280
Remag 26 A
Remag 28 A
Remag 28 T
Remag 31 A
catalogue magneti pdf

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