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Guy's Magnets 5 mm x 7 mm alnico rod

Guy's Magnets 5 mm x 7 mm alnico rod

Item Code (SKU): RO5/7AAL3
Minimum purchase price £3.440
Minimum purchase price: £3.440
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  • +/-0.25mm manufacturers tolerance on any dimension
  • These magnets have a large number of surface blemishes but they do not affect the strength of the magnet in any way
  • Magnetised through the thickness so that one flat face is north and the other is south

Alnico magnets are comprised of Aluminium (Al), Nickel (Ni) and Cobalt (Co) together with small amounts of Iron, Copper and, occasionally Titanium. Alnico magnets are one of the oldest members of the magnet family and have been in existence for approximately 50 years. They are not as strong as Neodymium or Samarium Cobalt magnets but they are very stable over a wide temperature range and have a high magnetic flux density.

Alnico rods are good electrical conductors because of the metallic composition. When rods (diameter smaller than thickness) are being used for open circuit applications the thickness should be approximately 5 times the diameter. However, because they are course grained they are hard and brittle and must not be drilled, conventionally machined or used as structural components.

Extra care must be taken with these magnets because they can be partially demagnetised by allowing like poles to come into contact.

Diameter5 mm
Thickness7 mm
GradeAlcomax 3 ( Cast Alnico 5)
Max Temp538°C / 1000°F
Weight0.001003 Kg
5 mm x 7 mm alnico rod

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