perguntas frequentes

Technical & Products

Are your magnets permanent or will they loose strength?
ALL the magnets we sell are permanent and do not require electricity to work. Craft magnets are susceptible to mechanical wear (knocks or dropping) and will loose magnetism as a result. Neodymium magnets loose 2% of their magnetism in the first 20 years after being magnetised and NONE after that.

What is the strongest type of magnetic material?
Neodymium iron boron magnets are the strongest magnet available with energy products up to 52MGOe available.

What coating do I need for my magnet?
This depends on the application. Our experienced engineers can help you determine the correct coating required for your application.

How are neodymium magnets made?
The main ingredients of a neodymium magnet are neodymium itself, ferro, and boron; the chemical compound known as NdFeb. The exact ingredients depend on the grade or strength of magnet being produced. At umagnets.com, we do not compromise on quality, the majority of our magnets are grade N35 or above, making them 20% more magnetic than many cheaper N35 grade magnets on the market. Unlike many other magnet suppliers we also add an element called dysprosium, which replaces some of the neodymium – dysprosium has the highest magnetic strength of all elements and is added to all our neodymium magnets raising the coercivity of the material and increasing their resistance to demagnetisation and corrosion.

Do all grades of neodymium magnets need coating?
Surface treatment is recommended for sintered neodymium magnets. Their composition inherently lends itself to corrosion if it is un-coated.

What types of coatings are available?
We offer a variety of coatings including nickel, zinc, gold, parylene, and epoxy. Consult one of our magnet application engineers with your specific requirements and we can work to make a recommendation.

Are your Neodymium Rare Earth Magnets RoHS compliant?
Yes, our magnets are fully RoHS compliant, meeting the European Parliament Directive entitled “Restrictions on the use Of Hazardous Substances” (RoHS).

How can I identify the poles of the magnets?
The easiest way is to use another magnet that is already marked. The North pole of the marked magnet will be attracted to the South pole of the unmarked magnet.

What does “Magnetized thru thickness” mean?
We use the description “Magnetized thru thickness” to identify the locations of the poles on our block magnets. The thickness is always the last dimension listed for block magnets. If you take one of our block magnets and place it on a flat surface with the thickness dimension as the vertical dimension, the poles will be on the top and bottom of the magnet as it sits. For example: Our B-20-06-02-N blocks are 20mm x 6mm x 2mm thick. If you place one of the blocks so it is on a flat surface with 2mm as the vertical dimension, the poles will be on the top and bottom as the magnet sits. This means the poles are located in the middle of the 20mm x 6mm sides.

I need a special shape of neodymium magnet. Can I order custom magnets from you?
Yes, we can supply custom magnets. You can find details on our Custom Maget Page.

How can I pay?
We offer easy paypal or credit card payment for smaller orders. For larger orders, we accept standard forms of payment: wire transfer, and terms to qualified customers.

Do you sell licensed neodymium magnets?
Yes, BUYNEOMAGNETS only sells licensed magnets – this ensures a higher quality final product.

Do you have a Download catalogue?
Now we do not have a download catalog available. Find all size of our magnets online, here at our website. Continue comprando

How can you guarantee quality?
BUYNEOMAGNETS has dedicated over 3,000 employees to its magnetics business. We employ over 350 technical and quality staff to oversee our process controls. Over the past two decades, we have experience working with both large, international corporations and small, highly specialized customers, so we can properly maintain high quality across large quantities of magnets and assemblies.

ordens & Shopping

Do you have a printed catalog?
No we do not have a printed catalog available. Find information about all of our magnets online, here at our website.

Do you have an affiliate program?
Yes, we do. If you have a website and would like to earn commissions for sales generated by your link to our store, please email us for details or click here to register our affiliate account.