NdFeB magnets

Model number cross-reference charts for NdFeB magnets are usually provided by manufacturers or sellers to identify magnets with different specifications and properties. These model numbers usually consist of letters and numbers that represent the magnetic material composition, magnetic properties, and other information. Below is an example of a common NdFeB magnet model number cross-reference. 1.N35-N52: This series of models represents the magnetic performance level of NdFeB magnets, from N35 to N52, the magnetic performance gradually increases. For example, N52 neodymium magnets has the highest magnetic properties and the strongest suction. 2. N, M, H, SH, UH, EH, AH: These letters represent the magnetic temperature coefficient and the maximum use temperature of different grades. For example, N represents the standard level, which is suitable for use in general environments; M, H, SH, UH, EH, AH represent different temperature levels, which are suitable for use in high-temperature environments. 3. 35M, 38H, 42SH: These models are usually expressed as a combination of magnetic performance class and temperature class, e.g. 35M represents N35 class magnets and are suitable for use in medium temperatures (100 degrees Celsius). Br stands for remanent magnetism, remanent magnetism is not surface magnetism, although both are in gauss units, two pieces of the same size and shape of the magnet, the higher the remanent magnetism, the greater the surface magnetism, the stronger the magnetic properties. But two different shapes of magnets, the remanent magnetization may be the same, the remanent magnetization is related to the raw materials. The remanent magnetization is related to the raw material, while the apparent magnetization is related to the size, performance, shape and so on.(BH)max represents the maximum magnetic energy product, the larger the maximum magnetic energy product, the stronger the magnetism.Tw represents the maximum operating temperature, this parameter should be judged according to the magnet L/D ratio.

Differences in magnetic properties. NdFeB magnets have a higher magnetic energy product and coercivity, which means they are able to produce higher magnetic field strengths and are more resistant to demagnetization. In contrast, ordinary magnets have lower magnetic properties. Stability difference. NdFeB magnets show better stability in high temperature, humidity and other environments, and are not easy to oxidize or corrode, while the performance of ordinary magnets in these conditions will decline rapidly. Applicable range difference. Due to their high magnetic properties and stability, NdFeB magnets are widely used in fields that require strong magnetic force, such as electric motors, hard disk drives, and medical imaging equipment. In contrast, ordinary magnets are typically used to attract lightweight items or low-precision electronic devices. Price Differences. Neodymium-iron-boron magnets are more costly, mainly due to their rare-earth metal composition and higher manufacturing difficulty. Ordinary magnets are relatively low cost. Processing Difficulty Differences. NdFeB magnets may exhibit brittleness during processing and require special attention to processing safety. In contrast, ordinary magnets are simpler and safer to process. Hardness Difference. NdFeB magnets are harder than regular magnets, which makes them more durable and less fragile during use. High temperature resistance difference. NdFeB magnets have better high temperature resistance than ordinary magnets and can work at higher temperatures. To summarize, compared with ordinary magnets, neodymium magnets have stronger magnetic force and longer service life, and are applicable to a wider range of fields. According to the specific application and demand, choose different kinds of magnets for application.