I am trying to add some new steel materials to our material library. It is has been along time since I have needed to do this and the user interface sure has changed alot. I can not find where to input Ultimate and Yield strengths. It seems like all it cares about are: Poisson's Ratio, Young's Modulus, densityand CTE. This doesn't seem to be too engineer friendly. I did notice if you pull down the "Failure Criterion" field, you can enter a Tensile Yield Stress for "Maximum Shear Stress [Tresca]", but why is there no place to enter the Strength properties in the "Properties" area?