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154CM is a type of stainless steel developed and manufactured in the United States by Crucible Materials Corporation (now - Crucible Industries). Crucible 154CM is a modification of martensitic stainless steel type 440C to which molybdenum has been added. It was originally developed for tough industrial applications and combines three principal elements: carbon, chromium, and molybdenum.[1] Hitachi Corporation of Japan copied the properties of this steel for their own brand known as ATS-34.[2][3]
154CM contains the following:[2]