"Wootz is a steel characterized by a pattern of bands or sheets of micro carbides within a tempered martensite or pearlite matrix. It was developed in India around 300 BC[1]. The word wootz[2] may have been a mistranscription of wook, an anglicised version of urukku the word for steel in Tamil or ukku, the word for steel in Kannada, Telugu and many other southern Indian languages."
http://en.wikipedia.org/wiki/Wootz_steel
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