How To Buy Rare Earth Magnets

Rare earth magnets have various uses, including lifting heavy metallic objects, manufacturing audio, and magnetic resonance imaging equipment, and installing business signage and wall décor. If you need a rare earth magnet, what considerations would you make when buying the magnet? Below are some tips. 

Type of Magnet

Neodymium and Samarium Cobalt are the most common rare earth magnets on sale today. Understanding the qualities of these magnets will help you determine the magnet that suits your application. Neodymium magnets are the stronger of the two magnets. Therefore, they are your best bet when using the magnet for industrial applications such as lifting heavy loads. Besides, these magnets can withstand high temperatures. Their downside is that they easily corrode. Therefore, when buying these magnets, ensure that they are nickel-plated to prevent corrosion. You should also examine the magnet's manufacturing process. Typically, the magnets are manufactured through sintering or bonding. The former produces a stronger but brittle magnet, while the latter offers a wide range of magnets since they can be cut into different sizes and shapes. 

Samarium Cobalt magnets are less brittle compared to Neodymium magnets. Besides, they are corrosion resistant. Their downside is that they are highly sensitive to temperature changes. These magnets will therefore demagnetise more easily than Neodymium magnets. 

Manufacturer

The magnet's manufacturer will significantly determine the quality and durability of the magnet. For instance, check the standards followed by the manufacturer when mining and making the magnets. Companies that comply with international standards are likely to produce high-quality magnets. Moreover, examine the manufacturing process. For instance, when buying a Neodymium magnet, check the type of coating used to prevent corrosion. While zinc plating is effective, consider nickel-plated magnets since they are wear and corrosion-resistant. Depending on how you intend to use the magnet, you could consider superior coatings such as gold, silver, or platinum. 

You should also assess the magnet grade. Ideally, the magnet grade determines the magnetic force of the magnet. The higher the magnet's grade, the higher its magnetic force. The manufacturer should also have a suitable magnet shape to suit your application. Experienced manufacturers will customise the magnet's shape to suit your needs. Finally, examine the magnet's maximum working temperatures to know whether it can withstand the working conditions.  

Pricing

The magnet's pricing is largely determined by its build quality and the manufacturer's reputation. Therefore, you should compare the prices of similar magnets before making your choice. Remember to consider factors such as warranties and guarantees when purchasing the magnet. 

When buying a rare earth magnet, determine its type, manufacturer, and pricing.

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