Sep 07, 2018

Common Knowledge About NdFeB

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Q: What is a neodymium magnet? Are they the same as "rare earth"?

A: The neodymium magnet is a member of the rare earth magnet series. They call

"Rare Earth" because strontium is a member of the "rare earth" element

Periodic table of elements. Neodymium magnet is the strongest magnet among rare earth magnets

The strongest permanent magnet in the world.


Q: What does the “N rating” or rating of the neodymium magnet mean?

A: The grade of the magnet or "N grade" refers to the maximum energy product.

A material made of magnets. It refers to the maximum strength

The material can be magnetized. The level of neodymium magnet is usually

Measured in millions of Gaussian Oster (MGOe). N42 magnet has one

The maximum energy product is 42 MGOe. In general, the higher the level,

The magnet is stronger.


Q: What is the difference between different coatings and coatings?

A: Choosing a different coating does not affect the strength or performance of the magnetic field.

Magnets, in addition to our plastic and rubber coated magnets. Preferred coating

Depends on preferences or expected applications. More detailed specifications can

Found on our specifications page.


♦ Nickel is the most common choice for electroplating neodymium magnets. It is actually a

Nickel - a triple coating of copper and nickel. It has a shiny silver surface and is well resistant

Corrosion in many applications. It is not waterproof.


♦ Black nickel has a lustrous appearance of charcoal or bronze. Black dye is

Add to the final nickel plating process of nickel, copper, black and nickel triple plating.

Note: It does not look as completely black as epoxy coating. It is still shiny,

Much like a pure nickel plated magnet.


♦ Zinc has a dark gray/blue surface that is more susceptible to corrosion than nickel.

Zinc will leave black residue on hands and other items.


♦ Epoxy resin is basically a plastic coating as long as it has higher corrosion resistance

The coating is intact. It is easy to scratch. According to our experience, it is the least durable

Available paints.


♦ Apply gold plating to the top of standard nickel plating. Gold plated magnet

Has the same characteristics as nickel plating but has a golden surface

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