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Properties of Magnets


Magnetic Properties of NdFeB Magnets


GradeRemanenceCoercivity ForceIntrinsic Coercive ForceMax. Energy ProductMaximum Operating Temp
BrHcbHcj(BH) max
mTkGskA/mkOekA/mkOekJ/m3MGOe
N301080-113010.8-11.3≥796≥10.0≥955≥12223-24728-3180oC
N351170-122011.7-12.2≥868≥10.9≥955≥12263-28733-3680oC
N381220-125012.2-12.5≥899≥11.3≥955≥12287-31036-3980oC
N401250-128012.5-12.8≥907≥11.4≥955≥12302-32638-4180oC
N421280-132012.8-13.2≥915≥11.5≥955≥12318-34240-4380oC
N451320-138013.2-13.8≥923≥11.6≥955≥12342-36643-4680oC
N481380-142013.8-14.2≥923≥11.6≥876≥12366-39046-4980oC
N501400-145014.0-14.5≥796≥10.0≥876≥11382-40648-5160oC
N521430-148014.3-14.8≥796≥10.0≥876≥11398-42250-5360oC


Physical and Thermal Properties of NdFeB Magnets


Modulus of elasticy22 x 106 psi
Ultimate tensile strength12 x 103 psi
Density7.4 g/cc
Electrical resistivity160μ ohm cm
Curie temperature310oC
Recoil permeability1.05
Max. service temperature80oC - 200oC