Wouldn't it form carbides everywhere, especially on the grain
boundaries, particularly with Chromium, serving zero useful purpose
and thereby "robbing" the metal matrix of the solute metals which make
ie. you'd get a brittle material which corrodes badly?
There's extremely high-carbon stainlesses made by powder metallurgy,
giving a pocket knife costing about US$100 and where you can both do
any normal task and shave with it.
Useful properties are obtained by giving a high-carbon layer to
stainless steels. This was being looked at 20 years ago as I met it.
They were aiming for around 6.5%C. Can't remember the method used.
Cannot be "case-hardening" with time at temperature in a carbon-source
material, as the carbon would react with the alloying elements and give
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