Böhler (or Boehler) T240 Extra is a high temperature creep resistant austenitic steel. Scaling resistance in air up to approximately 750 C (1380 F). This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SS-1210. Producer or source: Böhler-Uddeholm North America.