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FAQs

Do our local magnets shop buy from China?

Almost all of the rare earth magnets are imported from China. Local shops order in batch quantity and have these magnets shipped by sea to decrease their delivery costs.

Is it necessary to buy from magnet manufacturers?

Local shops do have their benefits. They store magnets, can deliver immediately, and often have good communication. When your design needs a special neodymium magnet, with high thermal resistance and low weight loss for example, no one is going to store such a magnet. That type of magnet must be custom made. This means working with a quality manufacturer is very important.

Is it cost-efficient to buy regular shape magnets (disc and blocked) from leyuan magnets?

Let's check a specific instance

You are in the United States and would like to buy 20,000 pcs of N42 grade block magnets with 1/4 "X1/4" "X1/8" dimensions and nickel plating. The price for a local American shop is 0.33.


Magnets (disc and blocked)


If we compare the two, you save almost 80 percent with Leyuan. In our experience, it is always cost-efficient to buy directly from a Chinese manufacturer if the net weight of your purchase is more than 15 kilograms.

How do we calculate the net weight?

Volume (mm3) * 7.5 / 1000.000 = kilograms

How does leyuan ship industrial magnets?

There are three ways, according to the gross weight. These include:

By sea: this is the slowest but the cheapest

By air: faster but the goods are shipped to a nearby airport

Express: this is the fastest but most expensive option. We use DHL, TNT or UPS.

What is the lead time?

We do not store finished products. All of our products are customized. Ten days is normal, but special magnets may take upwards of 30 days.

Energy product (wxh)max

The maximum energy product of the flux density b and field strength h is the most important quality of a magnetic material. The higher the energy product, the greater the magnetic energy. The higher the (wxh)max value of a magnetic material, the lower the magnetic volume required for a certain task with otherwise identical ratios.

Coercivity Hc

Coercivity is the field force necessary to eliminate magnetization. The higher the value, the more resistant the magnetization. A distinction is made between HcB and HcJ.

Remanence (br)

Remanence is the residual magnetization of a magnetic material magnetized up to saturation in a closed circle. Remanence is stated in Gauss (G), Tesla (T) or Millitesla (mT).


Operating temperature

The operating temperature is the highest temperature to which a magnet can be exposed without suffering a permanent loss of its magnetic power. It is an approximate value because there is dependence to dimensioning. There are factors, e.g. mechanical or chemical stress, which may further limit the maximum operating temperature.

Curie temperature

If the Curie temperature is reached, the magnetic material loses its magnetism.

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Huilong Industrial Zone Qiuga Town Ningbo China
enquiry@leyuangroup.com
+86-574-82819201