Ferroboron (FeB), an alloy consisting of iron and boron. The metal usually contains 17.5% to 20% boron and is used to produce boron steels.  It is manufactured either by carbothermic reduction of boric acid in an electric arc furnace together with carbon steel, or by the aluminothermic reduction of boric acid in the presence of iron. 

Ferroboron is added to C-Mn and other low alloy steels to improve hardenability (see Boron steel), and can also act as a nitrogen scavenger in steel, and in the production of NdFeB magnets.


For a complete listing of ferroboron specifications, see ASTM A323.

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McCreath Laboratories will send trained, experienced technicians to take a represented sample for you.  Whether in bulk or containers, our technicians have the training, tools and experience to collect a representative sample, ensuring that all subsequent laboratory testing is accurate and reliable.  With our mobile crushing units, Ferroboron in lump form can be partially processed on site per the ISO and ASTM standards, increasing efficiency and reducing the amount of material taken off-site.

The Professionals at McCreath Labs

McCreath Laboratories will employ both classical and advanced in-house techniques in the analysis of Ferroboron.  The techniques have been verified through the use of certified reference materials and some are adopted directly from ASTM or ISO standards.  A typical ferroboron analysis would be done as follows:

ElementTechniqueInstrumentReference Method
BTitrationN/AASTM E371
CCombustionLECO CS 744ASTM E1019
SiGravimetricN/AIn house
AlICPThermo ICAPIn house

For more information on the analysis of ferroboron, contact us