Permanent Magnets and Magnet

Permanent Energy since 1957

Technical Advice

Read the technical advice on the behavior of magnets and of the different work temperatures

Ferrite does not face irreversible de-magnetization (see the image).

Coaniax (Alnico)
To obtain the L:D ratio divide the length of a cylindrical bar by its diameter (see the image).

Plastic Laminate
Plastic laminate does not face any variation until 25°.
From 30° Cto 120° C it loses 2% for every 10° C in variation. These losses are totally reversible. Over 100°C there will be a loss of flexibility (irreversible).
At 209° C it starts to fume.
At 270° C it burns.

Rare Earths
Neodymium magnets, if heated, faces significant field variations.
In fact there are many variables that influence the behavior of this magnetic material (shape, geometry, gradation type, maximum work temperature, heating cycle).

Samarium Cobalt, on the other hand, resists, with no traumatic variations, up until 250°C.
We advise you to search for further technical details.