A metal rarely used in Egypt until the Saite Periodthat later became widespread during the Roman Period. Isolated examples are known from the Old Kingdom onward, but the most notable examples are an iron dagger, iron chisel heads, and amulets from the tomb of Tutankhamun of Dynasty 18.
Historical Dictionary Of Ancient Egypt by Morris L. Bierbrier
Ancient Egypt. A Reference Guide. EdwART. 2011.