Technical specification:
Shape: Block bar
Size: 50 x 20 x 5 mm （length x width x height)
Default tolerance: +/-0.1mm Or customize as required
Magnetism direction: Magnetized through height Or Customized
Material: NdFeB (sintered neodymium-iron-boron)
Grade: N42
N42 neodymium magnets have a maximum working temperature of 80 ℃, or 176°F.
Nickel-Copper-Nickel triple layer coated for maximum neodymium magnets durability and protection again corrosion.
N42 magnets are great for industrial applications such as parts retrieval, lifting machinery, and magnetically coupled pumps. For at-home projects, they can be used for craft projects, home improvement, and hanging artwork or other decorations.
The usual magnetized direction of block magnets is through thickness, that means that the N-S poles are on the big flat surfaces.
The material and grade of a magnet refer to a set of properties which ultimately yield the magnet's performance.
The strength of a magnet can be found in the magnet specification known as BHmax, which is the maximum energy density of a magnet. This is defined in Mega Gauss Oersteds, or MGOe. For Neodymium (NdFeB) Magnets the BHmax will range, in general, from 30 MGOe to 55 MGOe.
The exact magnetic strength will be determined by its grade mostly, for example, regarding the same dimension magnet Dia10*5MM, the higher the grade is, the stronger the strength will be.
Neodymium magnets produce the highest MGOe of any permanent magnet material. The most common grades of Neodymium magnets are N33, N35, N38, N40, N42, N45, N48, N50, N52, and N55.