Jessop-Saville H.40 is an alloy steel recommended for high-temperature stressed components of gas turbines. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-140. Producer or source: Jessop-Saville Ltd, Brightside Works.