China Neodymium And Ferrite Magnets Manufacturer & Supplier 
In the procurement (buy) of magnets, many people will face a choice: to choose expensive, or cheap? Especially in the face of a wide range of low-priced magnets on the Internet, can not help but let a person question: the quality of these cheap magnets in the end reliable? In fact, there is no absolute answer to this question.
First of all, cheap can sometimes be value for money. Many magnets do not require super high suction. For example, for children's toys, refrigerator stickers, posters fixed and other daily use, cheap magnets are usually more than enough.
For some cost-sensitive industries (such as stationery, handicrafts, simple packaging industry, etc.), cheap magnets provide a lower procurement threshold, which helps to control the overall cost, especially in high-volume application scenarios, the reduction of procurement costs is significant.
There is a wide range of low-cost magnets on the market, from shapes and sizes to coating types, suitable for different needs. Especially on e-commerce platforms, it is often easier to get inquiries for low-priced products.
The accompanying picture is a dimensioned drawing of a block magnet with a countersunk hole in the center.
The above can be counted as its advantages, then let's talk about its disadvantages.
Many cheap magnets are made of low-grade magnetic materials (such as N33 or lower), and even cut corners in the sintering and dosing process, resulting in insufficient flux density, insufficient suction, and failing to meet the nominal parameters. In use, it is easy to appear “suction can not” or the phenomenon of rapid decline in suction.
In addition, the appearance, plating, tolerances and other aspects of the control is certainly not so good.
Therefore, cheap magnets are not necessarily “unreliable”, the key is to see whether it is suitable for your application. If only low load, non-precision daily use, then choose a low-cost magnet is not wrong. But if the application involves safety, precision, high performance and other requirements, then we must be vigilant about the quality risk behind the low price.
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