TechTalk: Industry News

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Magnet Safety 101: How to Safely Handle Magnets

Magnets are produced in a wide array of sizes, shapes, and strengths, but there are similarities between all magnetic materials.  They are all relatively brittle which when coupled with their magnetic strength present a number of issues.  They also invoke curiosity, and who hasn’t heard the adage of what curiosity did to the cat?  Handling […]

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What Is Magnetic Permeability and Why Are Some Materials Magnetic When Others Are Not?

A Closer Look at Magnetic Permeability and Why Some Types of Materials Are More Attracted by Magnets Than Others Two magnets attract to each other because their fields interact.  Usually, materials that are not magnets do not have a net external field, and obviously, they do not attract to things; however, some metal alloys can […]

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Essential Advice for Choosing the Best Magnet Vendor

So the right type of magnet has been designed or selected for your application and now you’ve begun the task of finding a company that can supply the part, right? Well, it’s not always that easy as magnets are unlike other commodities and, in fact, they should not be treated as commodities at all. At […]

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Magnetic Force Calculator Estimates Neodymium (Rare Earth) Magnet Pull Force

As part of our ongoing effort to provide magnet-related resources that may be useful to those in the field, we have added to our collection of magnetic property calculation tools. This particular resource is a magnetic force calculation utility that aids in estimating the attractive (pull) force of Samarium Cobalt magnets.

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Alnico Magnets are High-Temperature Magnets Ideal for High Heat Applications

Since its incorporation in 1961, Dura Magnetics has been a leading manufacturer of fabricated alnico magnets.  Alnico is an acronym used to reference the three primary elements used in the manufacturing process; aluminum, nickel, and cobalt.  Prior to the 1970’s and the advent of rare earth magnets, alnico was the strongest type of permanent magnet.  […]

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Selecting a Rare Earth Magnet

The term rare earth magnet is a generic name used to describe two types of magnetic material:  samarium cobalt and neodymium iron boron.  Both of these magnetic alloys utilize rare earth elements as the magnetic constituents and the characteristics offered by both material types lend themselves to specific applications…

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Benefits & Advantages of Magnetic Assemblies

Each post in our Tech Talk blog is designed to help you better understand the complex and sometimes confusing world of magnets.  In recent posts, we discussed material grade selection, machinability of magnetic alloy, and understanding how materials such as N52 neodymium are classified.  This post explains how magnetic assemblies work and why they are […]

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Micro Magnets – Miniature Magnet Solutions

Through continuous improvement efforts, Dura Magnetics has added the capacity to deliver micro-sized magnets. Magnet Materials: Oftentimes ultra-small magnets are limited to bonded magnetic products, but now Dura can deliver miniature, fully dense Neodymium Iron Boron (Neo), Samarium Cobalt (SmCo), and Strontium Ferrite (Ceramic).  In addition, Dura can supply miniature cast Aluminum Nickel Cobalt (Alnico) […]

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Why Magnets Lose Strength: The Effects of Volume Loss, Geometry, Elevated Temperature, and Demagnetization from External Fields

In the absence of external influences, a commercially viable magnet alloy should remain magnetic for hundreds of years.  The alloy’s resulting field may degrade slightly from aging effects, but for the most part it should remain an effective magnetic field source.  With that said, most magnets used in real world applications experience many external demagnetizing conditions.  A partially demagnetized magnet may greatly impact operational performance that may result in failures in the field…

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Scenarios & Techniques for Machined Magnets

The use of as-cast or near net shape magnets is almost always a preferred design path, but this is not always feasible.  This is where machining comes into play.  Some of the machining techniques common in the metalworking arena are modified and adapted to create special design features or to achieve specified tolerances on magnets.  […]

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