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Chrome steel is one of a class of non stainless steels such as AISI 52100, En31, SUJ2, 100Cr6, 100C6, DIN 5401 which are used for applications such bearings, tools, drills and utensils.
The term was used in both the original 1933 version, as well as the 2005 remake, of King Kong. When Kong is brought to New York City, he is chained with this metal on stage. The impression given by the film from Carl Denham to the audience is that the "chrome steel" has some unique properties of having a higher tensile strength than "normal steel" which is incorrect. The chromium component of chrome steel would only provide some corrosion resistance. Higher tensile strength steels are created by the addition of carbon. True to this deceptive description, King Kong breaks free anyway (in both versions).