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Wholesale 40 * 25 mm Cylinder Neodymium Magnets

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1.Neodymium Magnet
2.Material:Permanent Neodymium Magnet
4. Attractive in price

  • Super Neodymium Magnet
  • N40-N52,30M-50M,30H-48H,28SH-45SH,28UH-42UH,28EH-38EH,28AH-33AH
  • Wholesale 40 * 25 mm Cylinder Neodymium Magnets
  • Permanent
  • Permanent Neodymium Magnet
  • Global Neodymium Magnet Market
  • ISO9001:2000
 Wholesale 40 * 25 mm Cylinder Neodymium Magnets
  Neodymium magnets are actually composed of neodymium, iron and boron (they are also referred to as NIB or NdFeB magnets).  The powdered mixture is pressed under great  pressure into molds.  The material is then sintered (heated under a vacuum), cooled, and then ground or sliced into the desired shape.  Coatings are then applied if required.  Finally, the blank magnets are magnetized by exposing them to a very powerful 
magnetic field in excess of 30 KOe.

General Features:
Description  Sintered Neodymium Magnetic 
Material Neodymium-Iron-Boron
Grade Max. Operating Temperature
N35-N52 80°C  (176°F)
33M- 48M 100°C (212°F)
33H-48H 120°C  (248°F)
30SH-45SH 150°C  (302°F)
30UH-40UH 180°C (356°F)
28EH-38EH 200°C (392°F)
28AH-35AH 220°C (428°F)
Magnet Shape Disc, Cylinder, Block, Ring, Countersunk, Segment, Trapezoid, Irregular shapes and 
more. Customized shape are available.
Magnet Coating Ni-Cu-Ni, Nickel, Zn, Gold, Silver, Copper, Epoxy, Chemical, PTFE, Parylene, 
Everlube, Passivation and more.
Widely used in Speakers, receivers, leather bag magnets, packing boxes, magnetic buttons, toys, magnetic tools, magnetic craft gift packaging, magnetic filters, magnetic hooks, magnetic chuck, magnetic valve, oil degreasing equipment, magnetic actuators, magnetic bearings, magnetic pump, magnetic brakes, magnetic couplers, magnetic salvage, magnetic transmission, magnetic rolls, synchrotrons, radiation sources, free electron lasers, nuclear industry, agriculture, detection earthquake, magnetic switches , magnetic latching relays, arithmometer, counters, reed switches, sensors, plating table, speedometer, flow meter, tachometer, medical equipment, magnetic health supplies, magnetization water / magnetic water Processor, magnetic therapy, magnetic jewelry.  
Product Specification
Physical Properties(NdFeB magnet)
Temp.Coeff.of Br:    -0.11% / °C Temp.Coeff.of iHc:          -0.60% / °C
Density:            7.4-7.6g/ cm⊃3; Electrical resistivity:        144μΩ.com
Vickers Hardness:        600/Hv Flexural Strength:              25kg/mm
Tensile Strength:      8.0kgs/mm⊃2; Coeff.of Thermal Expansion: 4 X 10/¯ª/°C
Specific Heat:    0.12kCal/(kg. °C) Thermal Conductivity:     7.7Kcal/(m.h. °C)
Young’s Modulus: 1.6 X 10⊃1;⊃1;N/m⊃2; Rigidity:                      0.64N/m⊃2;
Poisson’s Ratio:           0.24 Compressibility:           9.8 X 10¯⊃1;⊃2;m⊃2;/N
Curie Temperature:   310-340°C
Export Advantage:
1.All inquiries, questions and emails will be replied within 24 hours.
2.Samples and small quantity are available.
3.Stock material for stable production.
4.Most favorable Price is available.
5.Excellent shipping forwarder to help to delivery magnet
6.Flexible Payment items include T/T in dvance and western union and L/C at sight or others
7.Quick deliery time & precise size tolerance
8.Good quality and assured service.

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