Rare earth, also known as rare earth element, is a general term for 17 kinds of metal elements in the chemical periodic table, such as lanthanides and lanthanum and cerium. It is an important non-renewable strategic material. With unique magnetic, optical, electrical and chemical properties, it can be combined with other elements into a variety of new materials. There are 250 rare earth minerals i...

There are no known health concerns with exposure to permanent magnetic fields. In fact, many people believe that magnets can be used to speed up the healing process. There may be issues with people with pacemakers or other implanted medical devices handling or being around strong magnets. We are not medica...

We have found that wrapping magnets with a few layers of electrical tape protects them from most damage caused by collisions with other magnets and hard surfaces. Another great way to protect your magnets from damage and the elements is to coat them with rubberized coating. We have created a page with st...

Flash drives store data with electric charges, not magnetic bubbles. A strong magnet has no effect on a flash drive.—————————————————————-Myth #1: The USB connectors on flash drive are fragile. Not even close. Connectors on USBs are made of metal and resists damage or bending. The rest of the USB drive, however, is not. So while it is possible to break or damage the connectors, it’s more likely yo...

“Split” is probably a more common word than “divided” in this context. If an atom has a net angular momentum (due to spin and orbital angular momenta of its constituent particles) then it also has a net magnetic dipole moment. The energies corresponding to the different possible quantized orientations of this magnetic moment in the magnetic field are seen as small increases or decreases in the tra...

All materials have tiny internal magnetic fields called domains, but in these three ferromagnetic metals, the internal magnetic domains are uniformly aligned to give them a magnetic field. In all other elements, the internal magnets are either randomly oriented or cancel each other out, which is why these ...

It depends on a bunch of factors like the type of magnetic material, the temperature, and whether it's stored with a "keeper" of easily magnetizable material that creates a magnetic circuit. A bar magnet out in the open tends to be in a metastable state. Magnetic field lines go in circles, but they don't "like" to go through air and and other non-magnetic materials, so this creates Magnetic reluct...

If a magnet must be fastened to a device, you can use either mechanical means or adhesives to secure the magnet in place. Adhesives are often used to secure magnets in place. If magnets are being adhered to uneven surfaces, an adhesive with plenty of "body" is required so that it will conform to the uneven surface. Hot glues have been found to work well for adhering magnets to ceramics, wood, clot...

Let's see the picture below. The field on the other side of the plate is almost nil. This is because the plate has diverted the field, causing a lot of it to flow within the plate itself instead of in the air. This is sometimes used to help shield a speaker from your TV set. Placing the speaker in a box lined with sheet steel prevents the speaker magnet from messing with the colors on your TV s...

Dial caliper is a very handy and convenient dimension measuring tool. It can measure outer diameter, inner diameter, thickness, Step and depth.Steps for using a caliper: 1. Clean the panel before measurement..2. Close the jaws and check that the indicator points to "0" on the dial face.If caliper doesn't zero, loosen the bezel clamp screw and rotate the bezel to the "0" position.Tighten the be...

1. Sufficient coercivity (and therefore enough electric current) must be supplied to completely magnetize the part. This condition places a lower limit on the value of current times turns. 2. Most of the energy stored in the capacitors is converted into heat within a few milliseconds in the coil. The time is too brief for significant amounts of heat to escape to the surroundings. The coil m...

Some important properties used to compare permanent magnets are: remanence (Br), which measures the strength of the magnetic field; coercivity (Hci), the material's resistance to becoming demagnetized; energy product (BHmax), the density of magnetic energy; and Curie temperature (Tc), the temperature at which the material loses its magnetism. Rare earth magnets have higher remanence, much higher c...

Block Dimension range(mm) Plane view(mm) Parallelism(mm) Perpendicularity(mm) 0.5≤L≤10 +/-0.03 +/-0.03 0.3 degree for adjacent sides 10≤L≤50 +/-0.03 +/-0.05 L＞50 +/-0.03 +/-0.1 Disc Dimension range(mm) Cylindricity(mm) Tolerance(mm) Parallelism(mm) 1≤D≤5 +/-0.02 +/-0.02 +/-0.02...

You can strengthen magnets by placing them inwater, stacking them on top of each other or recharging them. The method of making amagnet stronger depends on the type of magnet you have. To strengthen an iron bar magnet, fill a bowl or panwith water. Find a small item to float in the water and place the magnet on topof the item. The magnet starts to twirl in the water until it rests and pointsdirect...

All you need to know about Teflon Plating \ Coating Descr. Indoor Use Abrasion Humidity Water Salty Air / Near Ocean Salt Water Glue Thickness Price Nickel (Ni-Cu-Ni) A very durable multilayer combination of nickel, copper, nickel. Excellent Good Goo...

DC Motor Servo MotorA DC motor has a two wire connection. All drive power is supplied over these two wires—think of a light bulb. When you turn on a DC motor, it just starts spinning round and round. Most DC motors are pretty fast, about 5000 RPM (revolutions per minute).With the DC motor, its speed (or more accurately, its power level) is controlled us...

Thimble- The thimble rotates around a cylinder which is marked in millimeters- The left-hand side of the thimble has markings all around it- The line labeled 0 is the primary pointer.Close the jawsCalculate the least countPlace the object between the two jaws (Anvil andspindle), Spin ratchet until you hear 3 clicks.Record the position of main scale where the twomeasuring rods metNot...

For small and medium-sized magnets, the operator can separate them by sliding the end of the magnet off the stack by hand. For medium and large magnets, they can often be separated by using the edge of a table or countertop which is usually perpendicular to the magnetisation direction. Here is the detailed how-to: -place the magnets a table top with one of the magnets hanging over the...

There are 3 types of magnets: permanent magnets, temporary magnets, and electro-magnets.Permanent magnets emit a magnetic field without the need for any external source of magnetism or electrical power. Temporary magnets behave as magnets while attached to orclose to something that emits a magnetic field, but lose this characteristic when the source of the magnetic field is removed. Electro-magnet...

Moisture in the atmosphere is potentially enough to cause an uncoated NdFeB magnet to show signs of corrosion. Marine environments are particularly effective at makingNdFeB magnets corrode. The process of corrosion is similar to rusting – the structure of the Neodymium Iron Boron magnets changes permanently resulting ina progressive loss in magnetic performance (the magnet will weaken; the magnet ...

Magnetic field strengthis one of two ways that the intensity of a magnetic field can be expressed.Technically, a distinction is made between magnetic field strength H, measured in amperes per meter (A/m), and magnetic flux density B, measured in Newton-meters per ampere (Nm/A), also called teslas (T).The magnetic field can be visualized as magnetic field lines. The field strength corresponds to th...

Magnets can snap together and injure the operator or get themselves damagedMagnetic media have to stay away from magnets, say, credit cards, room cards, storage device like SDD, etc.Store magnets in closed containers, so that they do attract metal debris.If several magnets are being stored, they should be stored in attracting positions. (N-S Since AlNiCo magnets has low coercive force (Hc), they s...

Most modern magnetmaterials have a "grain" in that they can be magnetized for maximumeffect only through one direction. This is the "orientationdirection", also known as the "easy axis", or "axis".Un-orientedmagnets (also known as "Isotropic magnets") are much weaker thanoriented magnets, and can be magnetized in any direction. Oriented magnets(also known as "Anisotropic magnets") are not the same...

For most of the cases, we provide the terms below:DDU, DDP, EXW, FOB, CIF, C&F, FCA

The limits include:60mm max in magnetized direction170mm max diameter for discs and rings170mm max length and width for blocks0.35mm minimum on thickness on any magnet1.58mm minimum diameter on outer diameter1.58mm minimum diameter on any hole

Under normal conditions of handling, shipping, assembly and service,Vector magnets Technologies acceptance criteria allows imperfections such asminor hairline cracks, porosity, voids, cold loose chips or particles.Additionally, the condition of flow, shrinkage, pipe and other surfaceanomalies of the type commonly found in cast or sintered magnets shall bejudged acceptable if the following conditio...

Yes, our magnets are fully RoHS compliant, meeting the European Parliament Directive entitled "Restrictions on theuse Of Hazardous Substances" (RoHS). This Directive prohibits the use of the following elements in electrical/electronic equipment sold after 7/1/2006: cadmium (Cd), lead (Pb),mercury (Hg), hexavalent chromium (Cr(VI)), polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers...

In most applications, the answer is simply "no". If the magnets will be exposed to higher temperatures while in repelling applications, the answer is "possibly". The exact answer isa bit too complicated for a FAQ answer. We'd like to hear from your detailed question.

Very little. Neodymium magnets are thestrongest and most permanent magnets known to man. If they are not overheated or physically damaged, neodymium magnets will lose less than 1% of their strength over 10 years - not enough for you to notice unless you have very sensitive measuring equipment. They won't even lose their strength if they are held in repelling or attracting positions with other magn...

Yes. Neodymium-Iron-Boron magnets are sensitive to heat. If a magnet heated above its maximum operating temperature (176°F (80°C) for standard N grades) the magnet will permanently lose a fraction of its magnetic strength.If they are heated above their Curie temperature (590°F (310°C) for standard N grades), they will lose all of their magnetic properties. Different grades of neodymium different ...

Yes, for all shipments, we'll have test report attached. These mainly covers the test on dimensions, including all major specs and magnetic properties, say surface flux, flux density, demagnetisation curve. For specific requirement, tailored report can be provided.

We use the description "Magnetized thruthickness" to identify the locations of the poles on our block magnets. The thickness is always thelast 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.If you place one of the blocks ...

Choosing different coatings does not affectthe magnetic strength or performance of the magnet, except for our Plastic and Rubber Coated Magnets. The preferred coating is dictated by preference or intended application. More detailed specifications can be found onour Specs page.Nickel is the most common choice for plating neodymium magnets. It is actually a triple plating of nickel-copper-nickel....

According to the United States Department of Transportation and the Office of Hazardous Materials Safety, the limit forshipping magnets by air is a magnetic field strength of 0.00525 Gauss measuredat 15 feet (4.5 meters) from any point on the outside of the package. There are no restrictions on the shipping of magnetized materials by ground. When in doubt, ship magnets by ground transportation.

The maximum operating temperature is themaximum temperature the magnet may be continuously subjected to with no significant loss of magnetic strength. This is 176ºF (80ºC) for standard gradesof neodymium magnets. The Curie Temperature is the temperature at which themagnet will become completely demagnetized. This is 590ºF (310ºC) for standardgrades of neodymium magnets. Higher temperature grades h...

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 can freely rotate on the string, the North pole of the magnets will eventually settle pointing North. This actually c...

Chipping, crack, dirt, mud, etc