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Chromium steel was first made in ancient Persia

September 27, 2020

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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.

from Top Technology News -- ScienceDaily https://ift.tt/2HtVWHG

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Chromium steel was first made in ancient Persia

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