Fe-B

1. Introduce – Ferroboron (Fe-B) is an iron alloy composed primarily of iron (Fe) and boron (B). It is a highly effective alloying additive used primarily to dramatically improve the hardenability of steel. – Manufacturing Process: It is produced by precisely alloying iron ore or scrap iron with boron oxides (such as boric acid) in an electric furnace using the alumino-thermic reduction method or the carbon reduction method. – Key Role: Even when added in trace amounts (typically 0.001–0.003%) to steel, it segregates at the austenite grain boundaries to inhibit carbon diffusi...