Helpful Information

The below information is designed to give you a little more information about the products or services we offer on this site (cermagmagnets.co.uk)

Permanent Magnet

A permanent magnet is a material that produces a magnetic field for a half life of 500 years unless undue stress is put on the magnet such as heat, extreme cold, shock, or reverse magnetic field.

Gauss 

Gauss is one of the common unis of measurement used to measure magnetic fields.
The other common unit being Tesla
1 Gauss = 0.1mT (0.0001 Tesla)

Neodymium

Neodymium Iron Boron is one of the magnet materials in the Rare Earth family.  It is currently the strongest material size for size.  It can also ber refered to as NdFeB or Neo.  Neodymium is highly corrosive with Hydrogen so exposure to moisture will cause it to decay.  Fo this reason you commonly get Neodymium magnets plated, with the most popular being Nickel.

N35, N38, N50 etc

These numbers refer to the particular grade of magnetic material.  More information of what properties these grades refer to can be found at www.cermag.co.uk

Pole Face

Within the product information the pole face referes to what face has the magnetic poles in, i.e North and South.  For instance where the informtion given for say, a D9 x 3mm disc, says the pole faces are on the 9mm dimension then the flat faces are the magentic poles

Gauss on Pole

This is a useful bit of information to know what magnetic flux density is measured at the pole faces of a magnet.  The measurements are taken with our deisgned Gauss Meter, the GMET H001.

Pull Force

The pull force is calculated using the magnet in direct vertical contact with a ground flat iron plate.  The pull force figure is usually the best ever that will be achieved and many factors can inflence the actual pull force you will achieve.  These would include, debris between magnet and object, tempertuare, orientation of object, the objects material and the objects surface flatness.

Top Temperature

This is the figure, usually in Degree Centigarade, that the magnet will no longer exhibit a magnetic field, what we call an irrecoverable loss and the magnet will have to be remagnetised or replaced.  it is quite common that the magnet will lose some power as you approach this top temperature but only when it goes above will it be completely gone.