All of the pull force values we specify have been tested in our laboratory. We test these magnets in two different configurations. Case 1 is the maximum pull force generated between a single magnet and a thick, ground, flat steel plate. Case 2 is the maximum pull force generated with a single magnet sandwiched between two thick, ground, flat steel plates. Case 3 is the maximum pull force generated...

Magnetic fields cannot be blocked, only redirected. The only materials that will redirect magnetic fields are materials that are ferromagnetic (attracted to magnets), such as iron, steel (which contains iron), cobalt, and nickel. The degree of redirection is proportional to the permeability of the material. The most efficient shielding material is the 80 Nickel family, followed by the 50 Nickel fa...

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: On one of our blo...

There are several simple methods that can be used to identify the (Scientific) North and South poles of neodymium magnets.1)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.2)If you take an even number of magnets and pinch a string in the middle of the stack and dangle the magnets so they...

The coatings do not affect the magnetic strength or performance of the magnet.The preferred coating is dictated by preference or by the magnets intended application.Nickel is the most common choice for plating neodymium magnets, and is actually a triple plating of nickel-copper-nickel.It has a shiny silver finish and has good resistance to corrosion.Black nickel has a shiny, black/charcoal appeara...

As mentioned above, the iron in the NdFeB material will oxidize if it is exposed to moisture. For this reason, we do not stock any unplated magnets. We can supply unplated magnets as custom order items.

No. If they are being sent by airfreight, all magnets must be shipped in a box in order to comply with United States Department of Transportation, USPS, UPS, and FedEx regulations for the shipment of magnetic materials.

Mayb The strong magnetic fields of these magnets can damage certain magnetic media such as floppy disks, credit cards, magnetic I.D. cards, cassette tapes, video tapes or other such devices. They can also damage televisions, VCRs, computer monitors and other CRT displays. Never place neodymium magnets near any of these appliances. As for other electronics such as cell phones, iPods, flash ...

Not unless you really work at it. While you probably don’t want to stick magnets directly to your computer case, having them nearby will not harm your computer. Magnets can damage floppy disks and magnetic tape storage media, so you must keep magnets away from these items. They will not, however, damage any data on your hard drive unless you place a very large and powerful magnet directly on top o...

Table of ContentsNeodymium magnets (super magnets): Coating necessaryNickel (Ni-Cu-Ni)Gold-coating (Ni-Cu-Ni-Au)Chrome (Ni-Cu-Ni-Cr)Copper (Ni-Cu)Epoxy resin (Ni-Cu-Ni-Epoxy)Zinc (Zn)Pot magnetsSpecial coatingsFerrite magnets: No coatingNeodymium magnets (super magnets): Coating necessaryNeodymium reacts to oxygen and oxidises quickly if untreated. That's why all neodymium magnets in our shop are ...

Provided that the material has not been damaged by extreme heat, most magnets can be re-magnetized back to their original strength.

Once a magnet is fully magnetized, it's "saturated" and cannot be made any stronger. In that sense, magnets are like buckets of water: once they are full, they can't get any "fuller".

There are several reasons CINFER is the right choice for you:QUALITY: CINFER is an ISO/TS 16949:2002 certified manufacturer. You can count on our highly developed quality system to see your parts or project through from design through final delivery.EXPERIENCE: CINFER's customer service and technical team has decades of experience with nearly every type of magnetic application. You can be assured ...

Magnets are made using the following methods:- Pressing and Sintering- Extruding- Injection Molding- Calendering- Casting- Compression Bonding

Most people are familiar with the basic traits of magnets, and know that they attract metal objects. Specifically, magnets attract objects made from iron, nickel, and cobalt. However magnets are used in many other ways due to the fact that they are able to effect electrically charged particles and electric conductors. Because of these properties, magnets are capable of converting electrical energy...

Provided that the magnet is not exposed to strong demagnetizing fields, radioactivity or temperatures exceeding the max. OP temperature, the magnetization remains nearly unchanged.

SmCo (Samarium-Cobalt) and NdFeB (Neodymium-Iron-Boron) magnets belong to the "Rare Eearth" types since they contain Samarium or Neodymium. These elements are used in high-energy magnets.

No. Buymagnets.com and BuntingMagnetics Co. is not responsible for shipments once they leave our warehouse.Please ensure the products you are purchasing are eligible for import into thecountry you are having them shipped; each country has its own rules andregulations. All import duty and brokerage fees are a responsibility of thebuyer. We do not accept returns from orders shipping outside the cont...

All of the magnets we sell arelisted on this website, but we can also send out a printed catalog per request.Simply click on the “REQUEST A CATALOG” link on the left of this webpageor click here. Forthe most current selection and pricing please refer to the website.

Neodymium magnets are mainlyconstructed of Neodymium, Iron and Boron. Iron can oxidize very easily whenexposed to moisture and will rust over time. Therefore we have most of ourneodymium magnets nickel-plated to protect from oxidation.

Regulations come into play whentrying to ship magnets by air. Due to the strong magnetic field emitting fromsome magnets they can be considered “hazardous goods”, and there areregulations enforced by the International Air Transport Association (IATA).Packages containing magnets must have a reading of .0025 gauss or less whenmeasured from 7 feet away, or less than .00525 gauss at 15 feet from thepa...

Of the magnets we carry, threestyles are rated for high temperatures. Alnico is rated the highest with anoperating temperature up to 1000⁰F. Samarium Cobalt follows Alnico with anoperating temperature up to 575⁰F. Ceramic magnets have an operatingtemperature of up to 480⁰F.

Yes, but only certain magnets. Theonly magnets we carry which meet these criteria are our flexible magnets andthe bonded neodymium magnets. The flexible magnets can be cut down to size ordrilled through. The bonded neodymium magnets can be machined, but we recommendonly experienced machinists perform this task. All other stock magnets arebrittle making them very difficult to machine.

Not necessarily. The pull test is alaboratory test under ideal lab conditions. It is the breakaway force requiredto separate a given magnet from a flat 1018 steel plate. See attached MDFA PullTest Standard.When lifting an object with amagnet, many factors can affect the ability of the magnet to lift a givenweight. These factors include: surface finish of magnet & object, flatnessof magnet & object...

We offer magnets which are many things, but cheap isnot one of them. That doesn’t mean our magnets are not affordable, reliable,strong, and tested!

You can absolutely reach us usingany of the information found here.

Ferromagnetic materials are stronglyattracted by a magnetic force. The elements iron (Fe), nickel (Ni), and cobalt(Co) are the most commonly available elements. Steel is ferromagnetic becauseit is an alloy of iron and other metals.

Neodymium (more preciselyNeodymium-Iron-Boron) magnets are the strongest permanent magnets in the world.Learn more about Neodymium magnets,and permanent magnets.

Yes, stacking two or more magnetstogether will act similar to a single magnet of the combined size. However, dueto the air gap between the magnets, the combined holding force is slightlyreduced.

Ring magnets can be magnetized thisway and they are referred to as radially magnetized.

Most modern magnet materials have a“grain” in that they can be magnetized for maximum effect only through onedirection. This is the “orientation direction”, also known as the “easy axis”,or “axis”.Unoriented magnets (also known as“isotropic magnets”) are much weaker than oriented magnets, and can bemagnetized in any direction. Oriented magnets (also known as “anisotropicmagnets”) are not the same ...

The most powerful magnets availabletoday are the rare earths types. Of the rare earths, neodymium-iron-boron typesare the strongest. However, at elevated temperatures (of approximately 150 Cand above), the samarium cobalt types can be stronger that theneodymium-iron-boron types (depending on the magnetic circuit).

There are 2 types of magnets:permanent magnets and electromagnets.Permanent magnets emit a magneticfield without the need for any external source of power. Electromagnets requireelectricity in order to behave as a magnet.There are various different types ofpermanent magnet materials, each with their own unique characteristics. Eachdifferent material has a family of grades that have properties slig...

You can’t tell by looking. You cantell by placing a compass close to the magnet. The end of the needle thatnormally points toward the North Pole of the Earth would point to the SouthPole of the magnet.

Yes, the North or South Pole of amagnet can be marked if specified.It is relatively simple to identifythe poles of a magnet. First, the quickest method is to use another magnet thatis already marked. The North pole of the marked magnet will be attracted to theSouth pole of the unmarked magnet. Second, it is possible to use an even numberof magnets and pinch a string in the middle of the stack and ...

The North Pole is defined as thepole of a magnet that, when free to rotate, seeks the North Pole of the earth.In other words, the North Pole of a magnet seeks the North Pole of the earth.Similarly, the South Pole of a magnet seeks the South Pole of the earth.

Magnetic Poles are the surfaces fromwhich the invisible lines of magnetic flux emanate and connect on return to themagnet.

No. The Br value is measured underclosed circuit conditions. A closed circuit magnet is not of much use. Inpractice, you will measure a field that is less than 12,300 Gauss close to thesurface of the magnet. The actual measurement will depend on whether the magnethas any steel attached to it, how far away from the surface you make themeasurement, and the size of the magnet (assuming that the measu...

Most commonly, Gaussmeters,Magnetometers, or Pull-Testers are used to measure the strength of a magnet.Gaussmeters measure the strength in Gauss, Magnetometers measure in Gauss orarbitrary units (so it’s easy to compare one magnet to another), andPull-Testers can measure pull in pounds, kilograms, or other force units.Special Gaussmeters can cost several thousands of dollars. We only sell thepull-...

Once a magnet is fully magnetized, it cannot be madeany stronger – it is “saturated.” In that sense, magnets are like buckets ofwater: once they are full, they can’t get any “fuller.”