Chrome Steel
Chrome Steel
How is chrome steel made?
What processes and materials are used in the production of chrome steel
The basic information is found in this wikipedia article:
http://en.wikipedia.org/wiki/Basic_oxygen_steelmaking
Go to the "process" section and find point 6 (explains when alloys are added). Chrome is added at this point, usually in the form of ferrochrome alloy (FeCr). Many kinds of chrome steel also contain nickel.
"The strengthening effect on steel by forming stable carbide grains at the grain boundaries and the strong increase in corrosion resistance made chromium an important alloying material for steel. The high speed tool steels contain between 3 and 5% chromium. An important stainless steel is 18/10 stainless, made from iron with 10% nickel and 18% chromium, is widely used for cookware and cutlery. For these applications, ferrochromium is added to the molten iron. Also nickel based alloys increase in strength due to the formation of stable carbide grains at the grain boundaries. For example, Inconel 718 contains 18.6% chromium."
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