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TechTalk Blog by Dura Magnetics

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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What is Maximum Energy Product / BHmax and How Does It Correspond to Magnet Grade?

The term Maximum Energy Product (BHmax) is a commonly used, but often misunderstood figure of merit of magnets.  The BHmax is an Energy Density and it is oftentimes used to denote grade.  The grade convention is especially used for Rare Earth magnets, (Neodymium Iron Boron Magnets and Samarium Cobalt Magnets).  For instance, a grade 48 […]

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Magnet Materials Comparison Guide

A customer’s recent four magnet sample request (similar shape/size in Neodymium, Samarium Cobalt, Alnico, and Ceramic Ferrite) illustrates some of the challenges associated with selecting the proper magnet material. Instead of simply fulfilling this request, we took the time to discuss project specifics and learned our customer was interested in reducing the cost and maintaining […]

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Understanding N52 Neodymium Magnet Alloy

At Dura Magnetics, we field occasional calls and emails from customers and prospective customers inquiring about a neodymium magnet grade called N52.  So what exactly is N52, do you really need it, and what are some of the potential challenges associated with this type of neodymium magnetic alloy? N52 is shorthand for a neodymium magnet […]

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Neodymium Magnets

Regular visitors to our site may have noticed a newly revised Neodymium Magnets section.  The new material is designed to better serve the information needs of our different clients, so you’ll see everything from a revised Stock Neodymium Magnets section and a new Available Neodymium Magnet Grades to information on made to print and custom engineered Neodymium […]

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Effects of Heat on Neodymium Magnets: Reversible vs. Irreversible Field Loss

A neodymium magnet may be used to supply a triggering field for a magnetic sensor.  At various times of operation, the magnet may be exposed to a temperature which reduces the magnetic field to a level which the sensor will not be triggered.  Other than during the high temperature exposure, the magnet will supply a […]

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Did You Know?

Alnico is frequently specified but improperly used for sensor applications. See our Magnetic Sensors Page to ensure you are designing your sensor triggering application correctly.

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