... .Mechanical Properties Ultimate Tensile Strength, ksi116 min.0.2% Offset Yield Strength 0.2%, ksi80 min.0.1% Offset Yield Strength 0 ... .2%, ksi91 min.Elongation in 2 inches, %15 min.Hardness Rockwell C32 max.Impact Energy, ft.-lbs ... .74 min.Low Temperature Impact Properties Temperature °FRT34-4-40Ft.-lbs.162162155140Temperature ° ...