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TechTalk Tag: Magnets

How to QC Magnet Strength

Hysteresisgraph in Dura Magnetics’ Lab

How do you QC a permanent magnet, magnetic assembly, or a piece of equipment utilizing magnets?  There are several methods which will pass a Gage R & R, but they are generally unknown to people outside of the magnet industry.  Much of the technical data about magnetic fields, both commonly published and taught at the […]

How to Safely Handle Magnets

magnet chipped due to poor handling practices

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 […]

Magnetic Permeability:  Why Are Some Materials Attracted By A Magnet And Others Are Not?

Magnetic Induction - Permeability Plot

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 have a net field created by applying an external field.  This induced field is only present when the external […]

Essential Advice For Choosing A 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 […]

Alnico Magnets 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.  […]

Magnet Assemblies

Neo Radial Ring Assembly

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 […]

Did You Know?

Nickel/Epoxy/Parylene coatings can help reduce corrosion and chipping while extending magnet service life.

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