Properties of Steels for Nonlinear FEA
Dr. Funda is feeling pretty funda goal
on this one, as the information that you seek is proving difficult to find. To our knowledge, no easily-accessible yet comprehensive database for the elastoplastic behavior of metals exists yet. A search through our numerous references on hand revealed only the following stress-strain behavior for a single stainless steel, which is included here for your review:
This data is from the ASM Engineering Properties of Steel Handbook, who themselves obtained the data from Universal-Cyclops Specialty Steel Division, Cyclops Corp., 650 Washington Rd., Pittsburgh, PA 15228. Granted, this may not be what you were looking for but it is all that could be found here!
A search on the web did not turn up much more, a conclusion that you've probably reached yourself. Unfortunately the best that we can recommend is to canvass your local university library. The following reference might hold out some hope:
Computational Inelasticity, J.C. Simo, T.J.R. Hughes, Springer (New York), 1998.
Juan Simo performed significant research in the field of computational plasticity in the 1980's and early 90's, and this book might include some basic material data in support of the modeling along with links to other references.
We regret that we could not be of more help.