Chromium steel was first made in ancient Persia

London UK (SPX) Sep 23, 2020
Chromium steel – similar to what we know today as tool steel – was first made in Persia, nearly a millennium earlier than experts previously thought, according to a new study led by UCL researchers. The discovery, published in the Journal of Archaeological Science, was made with the aid of a number of medieval Persian manuscripts, which led the researchers to an archaeological site in Chah
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