The Ball Company

Magnetic balls are made of two different groups of materials: permanent ceramic and metal magnetics. The ceramic-based type consits mainly of hard ferrite (shortcut Hf). The metal type is represented by ALNICo (mainly Aluminium, nickel and cobalt), SmCo (samaium an cobalt) and NdFeb (neodym, iron and bohr). The magnetic balls can be supplied with isotroph or non-isotroph properties.

NdFeB magnetic balls:
Neodymium balls have a high energy density at room temperature and remain steady against de-magnetizing fields. The major disadvantage of neodymium is its poor corrosion resistance and restricted temperature durability. An additional coating can prevent these negative properties.

SmCo magnetic balls:
Samarium balls are second in energy density (after neodymium balls) and showcases a high temperature resistance. Another positive aspect is its resistance against high humanities.

Hard Ferrite balls:
The most cost-effective balls available. These balls are applied in cases whereno strong magnetic fields are required. Temperature and resistance against demagnetisization are in the medium field.

AlNiCo magnetic balls:
AlNiCo balls are easy to demagnitize by using opposing fields. One compelling characteristic is its utilizability at temperatures of up to 550°C (example: measurement tools)

Interesting applications for magnetic balls can be found in our application data base.