Where to get Temperature vs Yield/ Tensile/ Elastic Mod curves to use in Simulation?

on the right hand side there should be some recommended threads that you want to check out

sim pro and sim prem have materiality access

but otherwise the ones you recommended are the ones we usually point customers to or ask the material vendor

(note, the memberships are usually pretty reasonably priced and often have a trial version...a lot easier than going to the library probably!)