Block Magnet 20 x 20 x 3mm Ferrite Y35 - holds 450 g – 20 pieces

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Block magnet 20 x 20 x 3mm - holds 450 g - 20 pieces


Block magnets feature straight edges and are available in all proportions from cubes through to flat rectangular bars. Ferrite blocks are available in sizes from approx 10mm length up to 150mm length, with pull strengths exceeding 12kg. Block (or bar) magnets have completely flat surfaces that are perpendicular (at right angles) to each other, and are available in all scales from cubes through to long rectangular prisms. The dimensions for blocks are Length x Width x Height (mm).


Ferrite magnets can be used in a wide range of applications due to their high coercivity and low cost. They also have good machining properties which allows them to be cut into different shapes and sizes - they are cut with diamond tooling; standard drills and wire spark erosion techniques do not work. Ferrite has an excellent resistance to demagnetisation/corrosion, however care must be taken when handling the product due to its brittleness. Ferrite magnets can be used up to +250 degrees C making it ideal for use in electrical machines. At sub-zero temperatures e.g. less than -10 to -20 deg C, ferrite may start to show a reduced pull force (the temperature and the degree of weakening depends on the magnet shape and is application specific; for most uses this effect does not happen as the magnets never get that cold).






Applications of ferrite magnets

The ferrite magnets lend themselves to a variety of applications: from simple, such as magnetic locks for furniture or leather, magnetic lifters or magnetic separators, to the most sophisticated electric micromotors, which represent, along with speakers and some special magnetic applications, the areas of interest.




  Manufactured after 2013/01/01, The object of the declaration described above is in conformity with DIRECTIVE 2011/65/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL an the restriction of the use of certain hazardous substances in electrical and electronic equipment.

  • Block Magnet, Bar Magnet 20mm x 20mm x 3mm – 20 pieces
  • Magnetic-model: block, ferrite, Coating: uncoated, magnetization quality: Y35
  • Maximum Temperature: 250 ° C, the magnetization direction: axial, total weight: 6 g
  • Total: 1200 mm³, overall width: B 20 mm, Total height: H 3 mm, total length L 20 mm


Technical Specifications:

Product code               



Block / Bar / Cube


20mm x 20mm x 3mm

Length 20 mm
Width 20 mm
Height 3 mm


1200 mm³

Material Fe2O3 ( Ferrit )
Quality Y35



Total weight

6 g

Max. Temperatur

250 °C

Remanence Br (kG) 4,1
Remanence Br (T) 0,41
Coercivity bHc (kOe) 2,6
Coercivity bHc (kA/m) 208
Coercivity iHc (kOe) 2,7
Coercivity iHc (kA/m) 212
Energy product (BxH) max MGOe 3,8
Energy product (BxH) max kJ/m³ 30,4
Flux density (Gauss) *
Sliding resistance (Kg) *
Adhesive force (Kg) 0,45 kg



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