Ferrite magnets have their own naming rules. Now they basically use Chinese naming rules. At first there were Fer 3 or Feroba 3, but now these hierarchical names are no longer used. Later, the initial letter "C" of the ferrite (Ceramics) is used to name the hierarchy, such as C5 and C 8. The United States and Britain still use this rule. Nowadays most ceramic hard ferrite magnets are made in China, so Chinese grade naming is widely used in Europe and widely accepted in the United States. Their rule begins with Y.
Fer 3 or Feroba 3 is now called Y30H-1. Ferrite C8 is also known as Y30H-1.
Fer 2 or Feroba 2 is now called Y30. Ferrite C5 is also known as Y30.
Below is an example BH curve for Ferrite C5 (Y30). Ferrite C5 and Ferrite C8 are the most popular grades of hard ferrite (ceramic) magnets.

Most ferrite magnet grades start with C or begin with the Chinese name Y. But sometimes you will also see levels like HF26 / 18 (this is the Y30 level), which is a European naming convention, but not all European continents are in use.
The above is about the ferrite permanent magnet name related introduction, our company can provide a variety of sizes of ferrite round, ring, arc, square and multi-pole ferrite ring, need to find China magnet supplier we are undoubtedly a good choice!
It is recommended to click to view the following articles;
What is a C8 magnet? Grade 8 ferrite magnet related introduction
Is FB5H the performance grade of ferrite magnets?
Neodymium round magnets with a diameter of 5mm and a thickness of 4mm are more commonly used. If you feel that the magnetic force is not enough, the performance level can be appropriately improved. Welcome to consult the price!...
Our company is a permanent magnet supplier from China. We are good at processing micro-precision magnets, high-performance magnets, special-shaped magnets, and multi-pole ring magnets. The quality is guaranteed and the price is not expensive. We look forward to customer consultation from all over the world....
The sample is an N52 high-performance ultra small hole radially sintered neodymium rotor magnet, with specifications of 2mm outer diameter, 0.9mm bore, and 4.5mm height....
This is a square neodymium magnet for earphones, the length and width are 5mm, the thickness is 2mm, the thickness is magnetized, the surface is galvanized, 1mm or other thickness can also be selected, non-high temperature grade, the maximum working temperature is less than 80 ℃...
The sample is a high-performance ferrite rotor magnet with a radial 3-pair pole configuration (6 poles), measuring 20mm in outer diameter, center bore diameter of 8mm, and height of 27mm. surface magnetic flux density reaches approximately 1800 Gauss....
This is a small-sized short bar shaped neodymium iron boron strong magnet with a specification of 1.5 × 1.5 × 10mm. It is made of N42 performance grade neodymium iron boron material and magnetized along the length direction (10 mm direction)....
This is a rare earth NdFeB strong magnet with a length of 30mm, a width of 20mm and a thickness of 10mm. Surface treatment is nickel-copper-nickel, and the thickness is 10mm. Magnetization direction is length direction....
This product is a small rare earth NdFeB magnet ring, with gold plated surface, N52 grade, the magnetization method is axial, the size is 5mm outer diameter, 2mm inner hole, 2mm height, and the tolerance can be ±0.02mm. Welcome to consult us for the price....