CLARITE HW26 is a medium-carbon tungsten hot-work tool steel. It has the highest resistance to softening at elevated temperatures and highest abrasion resistance of any hot-work tool steel. In the 1200-1300 F range it retains good working hardness and sufficient toughness to give outstanding performance. For maximum service life, tools should be pre-heated before starting hot operation and air cooled when necessary during hot operation; do not water cool at any time. CLARITE HW26 is recommended when long tool and die life is required at elevated temperatures. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-479. Producer or source: Columbia Tool Steel Company.