China Neodymium And Ferrite Magnets Manufacturer & Supplier 
Which magnet is stronger? This question may seem straightforward, but it actually involves multiple factors, such as the material, size, magnetic grade, and operating temperature of the magnet. Here is a detailed explanation.
In terms of material, neodymium magnets have the highest magnetic strength, followed by samarium cobalt, aluminum nickel cobalt, and ferrite.
Regarding magnetic grade, whether it's ferrite or neodymium magnets, the higher the number, the greater the magnetic energy product and the stronger the magnetic strength. Taking neodymium magnets as an example, under the same dimensions, an N52 magnet is stronger than an N35 magnet, with a more concentrated magnetic field.
The accompanying image shows a 15mm square neodymium magnets.
In terms of size, under the same material and grade, the larger the volume, the greater the total magnetic flux, which can attract heavier objects or generate stronger long-distance forces.
In terms of magnetization direction, magnets have specific magnetization directions (axial, radial, multipolar, etc.). The strongest magnetic force can only be obtained by measuring or using along the magnetization direction. If a large magnet is not magnetized in the direction you need, its performance may not meet your expectations.
From a temperature perspective, heat can also “weaken magnetism.” Magnets lose their magnetic properties at high temperatures and can even become permanently demagnetized. This is particularly noticeable with neodymium iron boron magnets, while samarium cobalt and aluminum nickel cobalt magnets are more suitable for high-temperature environments.
Therefore, which magnet is stronger depends on the conditions under which the comparison is made. If the goal is to achieve the maximum absolute magnetic force at room temperature, and cost is not a primary consideration, and the environmental temperature is not high, we recommend high-grade sintered neodymium magnets (such as N52/N54). For applications with high environmental temperatures (above 200°C) that require stable magnetic force, we recommend samarium cobalt magnets. If budget is limited, the application is at room temperature, and there are no strict requirements for volume or weight, ferrite magnets are recommended.
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