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Carbon free steel is on its way - Volts with David Roberts
(www.volts.wtf)
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this post was submitted on 03 Jun 2024
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Carbon-free steel is just iron
[Edit] nevermind I forgot that that I don't know metallurgy lol
Carbon is just the traditional way of removing oxygen from the iron oxide. There are other ways of purifying the iron. And this method cuts away a lot of steps involving multiple processes and a lot of coal. Give the article a read or listen for more info, it's really interesting
At least according to Wikipedia, small amounts of carbon (< 2.14%) in the final alloy are an important component in controlling the ductility, which agrees with what I thought I remembered from materials classes (although I am not a materials scientist). Obviously not using the Bessemer process drastically reduces the amount of carbon necessary, but trace carbon is important.
Thanks for setting me straight! I kinda assumed it was some green washing bs, but the details in the interview are very interesting