High Quality AlNiCo Ring Magnets

Type: High Quality AlNiCo Ring Magnets
Samples: Available
MOQ: Depending on the magnets size
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High-Quality AlNiCo Ring Magnets

Alnico magnet is an acronym referring to a family of iron alloys which in addition to iron are composed primarily of aluminum (Al), nickel (Ni) and cobalt (Co), hence al-ni-co. They also include copper, and sometimes titanium. Alnico alloys are ferromagnetic, with a high coercivity (resistance to loss of magnetism) and are used to make permanent magnets. Before the development of rare earth magnets in the 1970s, they were the strongest type of magnet.

AlNiCo Ring Magnet

                 High-Quality Alnico Ring Magnets

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.

Physical   Properties of Cast Alnico

Curie   Temperature ()


Max.   Operating Temperature ()


Resistivity   (μohm.cm)


Hardness   (Hv)


Density   (g/cm³)


Relative   Recoil Permeability (μrec)


Saturation   Field Strength (kOe, kA/m)


Temperature   Coefficient of Br (%/)

-0.025   ~ -0.02

Temperature   Coefficient of iHc (%/)

+0.01   ~ +0.03



                 Strong AlNiCo Ring Magnet

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.

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We have three inspections in order to ensure the products we are selling are only that of the best quality.
The first inspection was done when the product is manufacture.

The second inspection begins at all products that have been completed.
One last inspection is conducted right before they are packaged.

10% of all of our products are randomly inspected.


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