I'm doing a bit of research for a story, so let me apologize in advance if this doesn't fit the mandate of your groups. I won't repost if I don't get an answer. Thank you, though, for your time in advance.
I'm trying to find a formula or a chart that'll help me figure out average/ideal steel strengths given a bar of a certain diameter. For instance, how thick of a rod of steel would a person need to keep it from buckling when a super-human applied a ton of pressure. I realize there are different types of steel, purities, etc., which is why I thought there might be a kind of slide-rule-esque chart for figuring X-type for Y-weight is Z-thickness.
Any help would be appreciated. I've Googled and checked Wikipedia, but the best they seem to have is related tooling equipment and melting points, respectively, which is interesting but not what I need. Again, thank you in advance for your help!