Cobalt Boron (CoB) Master Alloy

Cobalt Boron (CoB)


  • In cobalt base superalloys to deoxidize the melt and to improve their strength at elevated temperatures.
  • In cobalt base amorphous metals to add the required amount of boron.
  • In cobalt base hard facing alloys to add the required amount of boron.

Physical properties

The master alloy has a liquidus point of 1400 - 1450°C. Its density is 6.0 - 6.5 g/cm3.


The table below shows the composition of the cobalt-boron alloy.

Alloy Form Composition



15% B
balance Co


This information has been sourced, reviewed and adapted from materials provided by KBM Affilips.

For more information on this source, please visit KBM Affilips.


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