Ndfeb is an alloy composed of praseodymium neodymium, iron and boron, which is one of the most excellent permanent magnet materials at present. It has the advantages of high magnetic energy product, high coercivity and strong corrosion resistance.
We say NdFeb generally refers to sintered NdFeb, its main elements include neodymium, iron, dysprosium, boron and other elements, of which the content of iron accounted for about 65%, rare earth elements such as dymium, neodymium and other elements accounted for about 30%, the remaining about 5% of boron and other trace elements, so the density of NdFeb is close to the density of iron (7.86g/cm³), Its density is about 7.5-7.7g/cm³.
Under normal circumstances, the higher the magnetic energy product and temperature resistance grade, the higher the density, which is due to the addition of heavy rare earth elements in the NdFeb magnet with high temperature resistance grade, thus making its density higher. For example:
N35-N45 grade NdFeb density is about 7.5g/cm³
N48-N55 has a density of Ndfeb greater than 7.5g/cm³
N52SH grade NdFeb density is about 7.6g/cm³
The N38EH grade has a density of about 7.65g/cm³
In the detection of NdFeb blank, NdFeb density is also an important detection index. If the density is low, it may be that the powder is not shrinking enough in the material firing process.
For other performance indicators of NdFeb magnetic steel, refer to NdFeb performance parameters.