Uddeholm Vidar 1 ESR is a medium-carbon, chromium-molybdenum-vanadium, hot-work tool steel that is produced using the electroslag remelting (ESR) process. Its good toughness in combination with very good polishability and texturing properties makes it a suitable steel in plastic mold applications. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on high temperature performance as well as machining. Filing Code: TS-787. Producer or source: Uddeholms AB.