Common custom NdFeB forms
Sintered NdFeB magnets can be sourced as blocks, discs, rings, arcs, segments, cylinders, countersunk features, or precision machined geometries. Shape, magnetization direction, edge condition, plating buildup, and brittleness should be reviewed together before sampling.
Grade, temperature, and demagnetization margin
A grade should be selected around the operating point: required output, maximum magnet temperature, reverse field exposure, magnet thickness, air gap, duty cycle, and expected end-of-life margin. The highest energy grade is not always the safest production choice.
Coating and validation inputs
NdFeB is corrosion-sensitive, so coating choices such as NiCuNi, epoxy, zinc, parylene, e-coat, phosphate, or encapsulation should be tied to humidity, salt spray, adhesive bonding, handling, cosmetic, and cleanliness requirements.
Sourcing risk and alternate planning
Programs with rare earth supply risk can compare standard sintered NdFeB, HRE-Free NdFeB, bonded NdFeB, injection molded magnets, ferrite substitutions, or assembly-level redesigns when the magnetic circuit allows.