Technical
Technical reference
Grades, coatings, geometry and documentation for specifying custom NdFeB magnets.
Sintered NdFeB grades
Compare sintered NdFeB grade families, remanence, coercivity and indicative temperature limits. Understand why the magnetic circuit affects grade selection.
Coatings and corrosion protection
Compare coatings for sintered neodymium magnets: Ni-Cu-Ni, epoxy, zinc, passivation and specialty finishes. Review bonding, thickness and corrosion test conditions.
Magnetisation directions
Understand axial, diametral, radial, multi-pole and Halbach magnetisation. Specify the orientation, polarity and delivery state of custom NdFeB magnets.
Tolerances and geometry
Review indicative NdFeB magnet dimensional tolerances, edge breaks, surface finish and flux variation. Agree the final requirements against your drawing.
Export licences for rare-earth magnets
Understand China’s rare-earth magnet export controls, composition-based licensing, documentation and review timelines. Regulatory summary reviewed September 2026.
How to specify a magnet
Prepare an NdFeB magnet enquiry: drawing, grade, coating, magnetisation, temperature, quantities and delivery requirements for a comparable supplier quotation.
Send a drawing and we will confirm the right grade and coating for your operating conditions.
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