This round magnet is made of neodymium, a rare earth element, which gives it super strong magnetic force. The grade range of the neodymium disc magnets 30x5mm from N35 to N52, and the pull force of magnet to steel plate range from 21.76 lbs to 32.33 lbs. The central surface magnetic field range from 1913 Gs to 2340 Gs. Our 30x5mm strong neodymium disc magnets are delivered with plastic spacer.
Remanence(Br): Neodymium disc magnets 30x5mm N52 have remanence range from 14300 to 14800 Gs.
Hcj: It is over 11 Koe（876 KA/m）for sintered neodymium disc magnets N52 .
Magnetic Energy/(B-H)max: The 30x5mm round disc magnets have magnetic energy of 50-53 MGOe.
Working Temperature: The disc magnets wholesale must be used under 80 degrees Celsius.
Corrosion Resistance: Not resistant corrosion, Ni-Cu-Ni is the widely used coating for the disc neodymium magnets.
Axially(poles on flat ends)
approx. 14.6 kg
Central Surface Field
lf you have any questions, you can contact us to help you solve them.