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Contact: William Chang
Company: Hangzhou Vector Magnets Co., Ltd
6-1A, 88 Jiangling Rd, Binjiang
Hangzhou 310051
China
Phone: +8657156668956
Fax: +8657156668957
E-Mail: Send Inquiry
Date/Time:  8/16/16 8:45 GMT
 

NdFeB Magnet

Brief
Invented by Mr. Masato Sagawa from Sumitomo Metals Japan in 1982, Neodymium-
Iron-Boron, aka NdFeB, is a tetragonal crystal mainly consisting of neodymium,
iron and boron (Nd2Fe14B).


The major manufacturing methods developed from power metallurgy process by
Sumitomo Metals to melt-spinning process by GM.Nowadays, NdFeB is the strongest
ever permanent magnet, as well as the most frequently chosen rare earth
magnet.NdFeB magnet’s energy product ranges from 28MGOe to 58MGOe.

Characteristics
Neodymium magnets are composed mostly of Neodymium as well as Iron and Boron.
Since the magnets contain Iron, they are prone to rust. As a result, it’s
important to coat NdFeB Magnets to prevent rusting. Coating also helps to
strengthen the magnets. There are a number of coating options for NdFeB
Magnets. Nickel is the most popular coating material for NdFeB Magnets. Vector
Magnets, however goes a step further and gives NdFeB Magnets a triple plating
with layers of nickel and copper and then a nickel coating is applied again.
The triple coating ensures our NDFEB magnets last longer (are more durable)
than most (if not all) NdFeB Magnets out there in the market today. It’s
important to note that most NdFeB Magnets on sale today are single plated. Our
NdFeB Magnets are therefore the best in regards to durability. It's also worth
noting that Vector Magnets offer numerous coating options apart from nickel
coating. For instance, you can request for a zinc, copper, tin, epoxy, silver
or even a gold coating. Gold plated NDFEB magnets are quadruple plated with;
nickel, copper, then nickel again before they are given a top gold coating.


Neodymium magnets are graded depending on the material that makes them i.e.
N35, N38, N38SH, N42, etc... As a general rule of thumb, the higher the grade
i.e. the number following the letter 'N', the stronger the magnet. The
strongest Neodymium magnet (or simply the highest grade Neo magnet) available
in the market today is the N54 (N56 now is available in labs.) Any letter or
letters that follow the grade i.e. SH in N38SH represent the temperature rating
of the magnet. In case there’s no letter or letters following the grade, the
magnet is said to be a standard temperature neodymium magnet. NdFeB Magnets
have standard temperature ratings (no designation). The ratings include; M, H,
SH, UH, EH. Please note you can find all the temperature ratings of each
Neodymium magnet grade on our Neodymium magnets specifications page.


Pros:

1.Higher resistance to demagnetization: NDFEB magnets have a higher
demagnetization resistance when compared to many other types of magnets.
Although they are sensitive to heat, they don’t become demagnetized easily
when they are placed near other magnets or dropped, as is the case with most
magnets. 2.Unmatched strength: As mentioned above, Neodymium are the most
powerful permanent magnets in the world. The magnets are ten times stronger
than the strongest (ceramic) magnets. If you happen to be using ceramic magnets
currently in your project, you can (should) replace them with smaller NdFeB
Magnets for a much stronger holding force. Feel free to check out our Magnet
summary page to get an idea of the strength of each of our NdFeB Magnets.

3.Our Magnet summary page also shows other important info such as the surface
field of all the magnets in Vector Magnets’ stock. You also get access to an
online magnet calculator which can help you estimate the field strength as well
as pull force of magnets placed any distance from Neo magnet.

4.Reasonable cost: Our Neodymium magnets are reasonably priced when you
consider their amazing properties i.e. superior magnetic properties and higher
resistance to demagnetization.

5.Numerous applications: Neodymium magnets have extensive applications in many
industries/fields such as computer devices, motors, communication tools,
medical treatment instruments, speakers, sensors etc.


Cons:

1.Neodymium is a brittle material: Neodymium magnets are prone to chips and
cracks. The solution to this problem is by coating the magnets. 2.NDFEB magnets
are also prone to rust. Coating also helps in this case.

3.Machining Neodymium magnets generates heat which is capable of demagnetizing
the magnets or igniting the material which is highly toxic when burned. It’s
therefore important to control the heat the magnet is exposed to in any
application involving NDFEB magnets or avoid machining at all. NDFEB magnets
start losing their strength when they are exposed to heat exceeding 80C or 176F
(for standard N-grades). They become completely demagnetized at temperatures
above 310C or 590F (for standard N-grades).


Applications
NdFeB magnets can be found in assorted industries and applications. Electronic
and electric devices, medical equipment, toys, packing machines, hardware
tools, airplanes, you name it.More could be seen in permanent magnet motors,
loudspeakers, magnetic separators, SSD, MRI, etc.

Minimum Order: 1 pieces

NdFeB Magnet
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