China Neodymium And Ferrite Magnets Manufacturer & Supplier 
N42 and N48 in neodymium magnets are two common performance grades, some users want to know the difference between them, how to choose, the following is a detailed comparison of such grades.
Biggest Difference - Magnetic Properties
The biggest difference between the N48 and the N42 is the magnetic properties, and as you can also see by the data in the chart, the N48 has a larger maximum magnetic energy product and remanent magnetization.
Price difference
Neodymium magnets N48 grade need to add more rare earth elements, such as dysprosium, terbium, so the price will be more expensive, a move expensive about 10-20%.
Application Scenario Differences
The N42 grade is suitable for most conventional applications and is cost effective. The N48 grade is suitable for applications that require stronger magnetism, smaller size and higher performance, such as high performance, small size motors, magnetic connectors, and high end loudspeakers.
How much stronger is N48 than N42 for the same size?
How much stronger is mainly manifested in the surface magnetic strength and tensile force, the surface magnetic enhancement is about 5-8%, such as from 4000 Gauss to 4300 Gauss, and the tensile force enhancement is about 10-15% (e.g. from 10kg to 11.5kg).
How to choose;
Limited budget, room temperature use, medium requirements for magnetic force can choose N42, the need for stronger magnetic force or smaller volume, can accept the higher cost of the recommended N48 grade, if the temperature resistance of more than 80 ℃, you must choose the N42H/SH, or N48H or N48SH, rather than the standard N42, N48.
We hope the above content is helpful to you, if you have magnet purchase doubts, customization problems welcome to contact us.
Content Supplement Article;
N42 Neodymium Magnets Common Q&A
Difference between neodymium magnet N42SH and N42