China Neodymium And Ferrite Magnets Manufacturer & Supplier 
In the previous article “Neodymium Magnet Density kg/m3”, the density of various grades of neodymium magnets has been introduced, and today we are here to share with you the density and weight calculation method of ferrite permanent magnets.
Ferrite magnet density data;
Ferrite magnet is a common permanent magnetic material, according to the process can be divided into sintered and injection molding, sintered ferrite density of 4.8-5.0 g/cm3, injection molded ferrite density of about 3.8 g/cm3.
The accompanying photo shows a high-performance sintered multipolar ceramic ferrite ring with a density of about 5 g/cm3.
Once we know the density, we can calculate its weight, and we magnet manufacturers will also quote our customers a shipping price based on the magnet weight.
For example, a ring magnet with an outside diameter of 70mm, a hole of 32mm, and a height of 8mm, which weighs about 119g, how was this calculated?
The formula is: Π *(A+B)(A-B)*C*P/4000 [where A is the outer diameter, B is the inner diameter, C is the thickness and P is the density].
Substituting figures i.e. 3.14*(70+32)*(70-32)*8*4.9/4000=119.27g
If you need to calculate the weight of other shapes, such as square, round ferrite you can refer to the article “How to Calculate the Weight of Neodymium Magnet”, there are related calculation formulas.
Description; Our company is a ferrite magnet supplier in China, we can process and customize all kinds of shapes of sintered and injection molded ferrite magnets you need, if you need it, please feel free to contact us to get the price and samples.
Learn more about ferrite magnets;
Ferrite permanent magnets material composition detail
At what temperature do ferrite magnets begin to demagnetize?
Maximum Surface Magnetic Force Strength of Ferrite Magnets
Temperature Characteristics and Coefficients of Ferrite Magnets