Magnets/

Permanent Magnets

Permanent magnets are objects that have been manufactured from a magnetized material and are thus able to create their own persistent magnetic field. As a whole, magnets can be largely broken up into two categories: non-permanent and permanent. Non-permanent magnets are electromagnets which require an external electric current to trigger magnetism or non-magnetism. Permanent magnets, on the other hand, retain their magnetism indefinitely or until they are demagnetized by vibration, dirt, corrosion or interfering magnetic fields. 

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Master Magnetics, Inc./The Magnet Source™
Castle Rock, CO
800-525-3536
The sizes, materials and shapes that magnetic substances can come in are vast, including rings, blocks, rectangles, disks, arcs, bars and rods. Whether you need a permanent magnet, flexible magnet or magnetic device, all of your needs can be met at Master Magnetics, The Magnet Source™. Since 1976, they have been devoted to providing industrial and commercial settings with excellent products.
 
AZ Industries, Inc.
Ash Flat, AR
877-856-3042
Part of what we at AZ Industries do is help our customers understand exactly what the self contained energy phenomenons that they are purchasing are capable of. Working with magnetic substances, such as permanent magnets and magnetic devices, we know more about them then the industries that utilize them, and can therefore help ensure our customers receive precisely what they are looking for.
 
Magnetic Hold, Inc.
Wichita, KS
316-207-1895
At Magnetic Hold Inc., it is not only our fantastic products, such as permanent magnets, that set us apart from our competition. It is also our workmanship, consistency, low prices and our commitment to 100% customer satisfaction. We even keep certain magnetic configurations, styles and materials in stock for customers who need specific products on a regular basis. You are our top priority.
 
BuyMagnets.com
Elk Grove Village, IL
800-232-4359
When you go to the BuyMagnets.com website, we will introduce you to the thousands of magnetic products we carry in stock, such as our permanent magnets and plate magnets. But if you don't see what you need, be sure to call for more information. We have access to many more products than we can feature, and also have custom capabilities. We'll be glad to answer your questions.
 
Electron Energy Corporation
Landisville, PA
800-824-2735
Our talented staff of 100, which makes up the Electron Energy Corporation, continually exceeds expectations of customers of the magnetic products we sell, like our exceptional permanent magnets. Industrial customers that frequently purchase products and assemblies from us include military and aerospace prime contractors, as well as medical and oil exploration companies.
 
International MagnaProducts, Inc.
Valparaiso, IN
219-465-1998
The Magnets Online division of International MagnaProducts is an excellent resource for companies who are in need of magnetic materials, products and/or assemblies. It is as easy to maneuver around as it is to have the team at IMP help you find the perfect part for your application, detailed to your every specification. This includes modifying basics like permanent magnets.
 
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Industry Information

Permanent Magnets

A magnet's capacity for retaining its magnetism under various conditions is called "magnetic permanence," and some types of permanent magnets have higher capacities for permanence than others. Typically, permanent magnets are fabricated from such chemical elements as non-rare earth elements like, alnico (aluminum-nickel-cobalt), ceramics (such as strontium and barium ferrite), and rare earth elements link, Sm-Co (samarium-cobalt) and NdFeB (neodymium-iron-boron). As an advantageous magnet option, permanent magnets are widely used in many industries, particularly for applications which require constant magnetic force, such as in metal separation and holding, as well as the automotive, industrial manufacturing, aerospace, construction industries and more.

In addition to the aforementioned applications, another useful application is that mechanical motion can be created by permanent magnets when an electric current is introduced to one of the magnets' poles. However, rare earth magnets, including neodymium magnets and samarium cobalt magnets, have a much stronger magnetic force (and higher magnetic permanence) than other permanent magnets and for this reason can be used in small quantities to help with sound amplification and computer data processing. For instance, very small neodymium magnets help computer hard drives read and store information, or they may cause the vibration in speakers which produces sound. Ceramic magnets and aluminum-nickel-cobalt alloyed alnico magnets, two types of permanent magnet which are fabricated through sintering, are also used to amplify sound as well as for various metal holding, sorting and electric motor applications. This diversity of applications make permanent magnets essential in food processing, bulk material handling, metal fabrication and handling, electric motor manufacturing, sound amplification, data processing and many other industries. Magnet manufacturers can fabricate custom permanent magnets into a variety of shapes, densities and magnetic strengths.

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Permanent Magnets Image Provided by Master Magnetics, Inc.