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Magnet Information

Magnet Information

 


Super Strong Magnets - Wind & Solar Products - Wholesale To The Public!

Neodymium Magnet Product Information and Performance

All our magnets are extremely powerful high grade Neodymium, grade N42 or higher. They are a lot stronger than normal Neodymium magnets (N35, N38, N42, N45 or even N48, N50) on the market today.

Pull Force is the amount of force required to separate 2 of the same size magnets from each other.

Actual pull force of cylinder/disc magnets may vary depending on different applications due to the small contact surface, please test them before usage

Pull force can vary significantly as a result of surface conditions, direction of pull, type of steel, etc.

Pull force values on our site are presented to aid in design, but, the user should not use them as a definative reference.

Make sure you read the magnet safety warnings on our site before you purchase or use them.  If you are interested in finding out answers to questions such as "How does a magnet work?" or "How is a magnet made?", please read the "frequently asked questions" about magnets below.


Rare Earth Neodymium Magnets FAQs
 
1. How are NdFeB (Neodymium Iron Boron) Rare Earth Magnets Made ?
2. How do
NdFeB (Neodymium Iron Boron) Rare Earth Magnets work ?

Neodymium NdFeB rare earth magnets are sintered by powder metallurgy with chemical composition of Nd, Fe, B and other minor elements.

Neodymium Iron Boron (NdFeB) magnets are composed of Nd, Fe, B, Dy, Co and other minor elements. NdFeB neodymium magnets are the rare earth magnets with the highest magnetic performance and coercive force in the world.

Neodymium NdFeB magnet have excellent magnetic properties and are extremely strong for their small size. NdFeB magnets are more sensitive to temperature changes, ranging from  0.10%/°C - 0.13%/°C. NdFeB magnets are permanent magnets with the highest maximum energy product. Over the last 10 years, due to the high ratio of performance over price of the NdFeB magnets, NdFeB magnets have become extremely popular in almost all high technology applications that require high performance magnets, motors, sensors, computers, communications, medical equipment, meters, home appliances and so on.

Neodymium NdFeB magnets are mechanically stronger than Sm-Co magnets and less brittle than ceramic & AlNiCo magnets. However, sintered NdFeB magnets are very easy to be corroged. Therefore, Neodymium NdFeB magnets have to be protected with a special coating, such as Zn, Ni, Ni-Cu-Ni, or epoxy. In general, sintered NdFeB magnets need some finish machining to meet the final tolerance.


Production Process of Rare Earth Neodymium Magnets

1. Vacuum Melting

Compositions of neodymium, iron , iron-boron, dysprosium and minor additions including cobalt , copper , gallium, aluminum and others are mixed and induce-melted to form Nd2Fe14B phase and other necessary structures required for high performance permanent magnets. The melting temperature reaches over 1300o C. Usually repeated melting is needed to produce an even phase and structure distribution .

2. Crushing

The ingots from the vacuum melting process are crushed into coarse powder directly , or strip cast followed by HDDR processing into coarse powder .

3. Jet Milling

The coarse powder further milled into required particles sized about 3 microns in diameter by a jet miller . Those particles become single-domain and anisotropic whichare critical for producing a high coercivity magnet. Jet milling is the most effective way to mill the particles so far.

4. Pressing

Compact the fine powder to produce block magnets. Usually a magnetic field is applied during pressing to align those anisotropic particles in order to produce maximum magnetic output in a particular direction. There are two pressing methods, transverse and axial , depending on different applications. Isostatic pressing is normally used to further densify magnets to 75-80% .

5. Vacuum Sintering

The compacted magnets are sintered at temperatures above 1000 o C and for many hours to be solidified and compacted further more up to 99% by shrinking it's body. A required microstructure between particles for high performance permanent magnets is also formed in this stage. Some following heat-treatments are needed to stabilize the magnets .

6. Machining

Shrinkage and distortion during sintering is too difficult to control adequately and magnets normally need at least a “ clean up” grind on the surface. Small parts are cut or sliced precisely to form a big block to meet the demanding tolerances and different shapes .

7. Surface Treatment

Various surface treatments can be applied on the final products . They include zinc, nickel ,Ni-Cu-Ni multi-layer, e-coating , epoxy and others. They provide different surface finishing, appearance and corrosion resistance, applicable to different application environments.

8. Inspection

This is the final step. Magnets are inspected based on customer specifications and needs, including dimensional and magnetic tests. 



Magnetic Properties Of Neodymium Magnets

Grade Remanence
(BrmT)
Max.Energy
Product
(BH)max (MGO)
Coercive
Force
Hcb (KOe)
Intrinsic
Coercive
Force
Hci (KOe)
Max
Working
Temp.
(°C / °F)
N35 1170-1210 33-36 ≥10.9 ≥12 80 / 176
N40 1250-1280 38-41 ≥10.5 ≥12 80 / 176
N50 1400-1450 48-51 ≥10.0 ≥11 80 / 176


Magnetization Direction

 

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Applied Magnets is the #1 leading wholesaler of permanent rare earth industrial magnets, ferrite ceramic magnets, magnetic assemblies, magnet tools made with neodymium rare earth magnets, effective magnetic water treatment system made with the most powerful neodymium rare earth magnets and magnetic accessories and Magnetic Levitation Science Projects. We distribute industrial neo neodymium-iron-boron NdFeB rare earth magnets, cup magnets, samarium cobalt rare earth industrial magnets SmCo, ferrite (ceramic) magnets, magnetic strips, magnet wire, Magnetic Levitation & Magnetic Levitating Train Kits and magnetic tools.


Magnet Pole Detector - Identifier - [POLE-1] Hot New Item - Now In Stock!

This is a great new gadget we are carrying!
Works with all types of magnets!

How does it identify the north and south poles of a permanent magnet?

Simply press and hold the black oval button.Then, place the tip of the detector near the surface of the magnet.

If it is the North Pole, the Red LED will glow.
Magnet Pole Detector - Identifier-North
Magnet Pole Detector - Identifier-South
If it’s the South Pole, the Green LED will glow.

It’s just that simple.

And if the button is held and the unit is moved around the surface of the magnet….you can see the transition from one pole to another.

This pole identifier is guaranteed to be 100% accurate.

It can be used for NdFeB, SmCo, AlNiCo, Ceramic and most other magnets and refrigerator/flexible magnets.

Applications
• Pole detection of permanent magnets
• Measurement of stray magnetic fields in packaging
• Coil testing
• Post-magnetization polarity checks

Helps with the following tasks:
• Electric motor assembly
• Installation of magnetic clamping blocks
• Error Analysis
• Multipole quality control
• Pole detection of therapy magnets

Dimensions: approx. 5.6″ x 0.9″ x 0.8″, measuring side 1/2″ x 1/2″
Weight: approx. 0.08 lb with batteries
Display: two LED display (green= south, red=north)
Sensitivity: ±17mT (170Gs) on/off hysteresis
Operating temperature range: -10°C ~ +50°C
Storage temperature: -20°C ~ +70°C
Battery: 4 x 1.5v button cells (included)

Click HERE to go to product.

Hydro-Soft Neodymium Magnetic Water Softener Now In Stock

We are now stocking the Hydro-Soft Neodymium Magnetic Water Softener.
“Hydro-Soft” magnetic water devices are easily placed over the outside of any type of plastic or copper pipe.
Even a caveman can install “Hydro-Soft” water treatment devices…It’s sooo easy!
Built with Most effective…Strongest rare earth neo neodymium magnets !
Nickel-copper-nickel triple layer coating for maximum corrosion resistance.

A very easy do-it yourself installation project that takes very little time & with no pipe cutting!

“Hydro-Soft” water softener devices will not give you that slimy feeling in the shower that you get from a salt based water softener.

“Hydro-Soft” water softener device is powered by high tech…high energy shielded neo neodymium magnetic fields and the flow of the water through your pipes. Not electricity!

The “Hydro-Soft” water softener devices are effective on city and well water alike.

Why are “Hydro-Soft” water softener devices better than salt based water softeners?

* Super duty solid steel back driver quadruples the magnetic strength
* Requires No Salt and No Ongoing Expenses.
* Requires No Plumbing Modifications.
* Requires No Electricity.
* Maintenance Free.
* No Back Flushing & No Inconvenience.
* Completely Silent Operation.
* Requires No Water.
* Improves Water Flow and Pressure by Removing Scale Build-up From Inside Pipes and Appliances.
* Prevents and Removes Existing Lime and Scale Build-up.
* Does Not Corrode Water Heaters, Pipes, & Fixtures.
* Safe for Older Homes!
* Does Not Harm Our Environment or Our Fresh Water Supply.
* Feel Cleaner and Fresher After Bathing.
* Legal To Use In All Areas of The U.S.
* Safe For Heart Patients and Those With Hypertension.
* Take Applied Magnets Water Softener Devices With You When You Move.
* Retains Healthful Minerals.

Link To Product

Welcome to Applied Magnets where we sell strong magnets for less. One category of strong magnets that we have in stock is a whole line of ceramic magnets. Our ceramic magnets are high in demand and are highly versatile. These have been used in many an industry and with a high success rate. You can never go wrong with our huge assortment of ceramic magnets. From inducers, electromagnets and transformers magnets have been used in everything. We stock both ceramic blocks and rings for whatever projects you need them for. Browse our site for the most comprehensive selection of ceramic magnets on the web. Look through our picture gallery to find the product you are looking for and we will deliver it to you.


Many materials have unpaired electron spins, and the majority of these materials are paramagnetic. When the spins interact with each other in such a way that the spins align spontaneously, the materials are called ferromagnetic (what is often loosely termed as "magnetic"). Due to the way their regular crystalline atomic structure causes their spins to interact, some metals are (ferro)magnetic when found in their natural states, as ores. These include iron ore (magnetite or lodestone), cobalt and nickel, as well the rare earth metals gadolinium and dysprosium (when at a very low temperature). Such naturally occurring (ferro)magnets were used in the first experiments with magnetism. Technology has since expanded the availability of magnetic materials to include various manmade products, all based, however, on naturally magnetic elements.

Not only do we have a collection of ceramic magnets but we also have a large range of Neodymium Magnets as well. These magnets are very robust in relation to their size. Popular with industries and hobbyists.
Neodymium magnets are used in a wide variety of applications. From hard drives to headphones to loudspeakers these magnets have seen it all.
Ceramic Magnets or ferrite
Ceramic magnets, or ferrite, are made of a sintered composite of powdered iron oxide and barium/strontium carbonate ceramic. Due to the low cost of the materials and manufacturing methods, inexpensive Ceramic magnets (or nonmagnetized ferromagnetic cores, for use in electronic component such as radio antennas, for example) of various shapes can be easily mass produced. The resulting Ceramic magnets are noncorroding, but brittle and must be treated like other ceramics.
Neodymium-iron-boron (NIB)
Neodymium magnets, also referred to as neodymium-iron-boron (NdFeB) magnets, have the highest magnetic field strength, but are inferior to samarium cobalt in resistance to oxidation and temperature. This type of magnet has traditionally been expensive, due to both the cost of raw materials and licensing of the patents involved. This high cost limited their use to applications where such high strengths from a compact magnet are critical. Use of protective surface treatments such as gold, nickel, zinc and tin plating and epoxy resin coating can provide corrosion protection where required. Beginning in the 1980s, NIB magnets have increasingly become less expensive. Even tiny neodymium magnets are very powerful and have important safety considerations.At Applied Magnets you will get the best possible price on these Neodymium magnets. All you have to do is just browse and choose from our huge selection and we will do the rest. Plus with shopping online you get the modern convenience of buying from your home or place of business. Nonetheless, our neodymium magnets come in many different shapes and sizes. From blocks, cubes, spheres, cylinders to arcs and rings; we here on our website offer it all. We can supply you with our neodymium magnets better then the other suppliers out there.

Help us help you with your magnet needs with Neodymium Magnets and Ceramic Magnets from Magnet 4 Less.


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All Product Categories at Applied Magnets


Applied Magnets retails strong neodymium magnets at low wholesale prices.Rare earth magnets include hobby magnets,craft magnets,industrial magnets,powerful magnets for sale online. Neodymium magnets to buy for hobby and craft projects.Applied magnets is your best source to buy Magnets. From one magnet for sale to 10000... we are your Magnet for sale headquarters.Did we mention magnet wire for sale? Did we mention coil wire? We have all the wire you will need from Essex Wire.

Not only Tools, but Tools that are magnetic.

From small rare earth neodymium magnets to large rare earth industrial neodymium magnets. We are your rare earth neodymium magnets headquarters. If you want industrial rare earth neodymium magnets see us. Rare earth neodymium magnets are very strong. Want rare industrial earth neodymium magnets? We have all the industrial rare earth neodymium iron boron magnets you need. Did we mention industrial rare earth neodymium magnets? Our catalog has rare earth neodymium magnets. Rare earth neodymium magnets are our specialty. Rare earth neodymium is another variation of a magnet for sale. We also have rare earth neodymium iron boron magnet spheres. Also, industrial rare earth neodymium magnet for sale discs. Not to mention rare earth industrial neodymium magnet blocks. These are permanent rare earth neodymium iron boron magnets. Look for our rare earth neodymium magnet for sale rings. Rare earth neodymium industrial magnets abound also. Rare earth neodymium magnets can be found in our catalog. For your home and office rare earth neodymium magnets are very useful. Our rare earth industrial magnets are great for water treatment conditioner projects.

We do manufacture special orders of rare earth neodymium iron boron industrial magnets. Use rare earth neodymium iron boron magnets along with ferrofluid in your science class projects.


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