Aluchrom 4 18 YHf is an oxidation resistant ferritic stainless steel alloyed with aluminum. The alloy has improved workability over Aluchrom YHf (see Alloy Digest SS-899, January 2004). This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SS-1246. Producer or source: ThyssenKrupp VDM GmbH. See also Alloy Digest SS-1099, August 2011.