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Guy's Magnets 19.2 mm x 6.75 mm x 9.55mm AlNiCo 5 ring

Guy's Magnets 19.2 mm x 6.75 mm x 9.55mm AlNiCo 5 ring

Item Code (SKU): RI19.2/6.75/9.55AAL5
From £0.000 Minimum purchase price £3.000
Minimum purchase price: £3.000
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Technical Specifications

  • Outer Diameter: 19.2mm (0.75" / 3/4)"
  • Inner Diameter: 6.75mm (0.26" / 1/4)"
  • Thickness: 9.55 mm (0.375" / 3/8)"
  • Axially Magnetised through the thickness so that one flat face is north, the other is south
  • Weight: 17.6g
  • Grade: Cast AlNiCo 500 (AlcoMax 3)
  • Coating: None
  • Maximum Temp: 525°C / 977°F
    • Never allow like poles (south-south or north-north) to come into contact with each other because it will cause the magnet to be partially demagnetised.
    • All cast AlNiCo magnets shatter if dropped onto a hard surface
    • These magnets are brittle. Not suitable for children under 8

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.

Outer Diameter19.2 mm
Inner Diameter6.75 mm
Thickness9.55 mm
GradeCast AlNiCo 5
Max Temp527°C / 977°F
Weight0.017689 Kg
19.2 mm x 6.75 mm x 9.55mm AlNiCo 5 ring

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