I am an occasional hobbyist "DIYer" (not an engineer) who needs help choosing a steel plate for a small home improvement project:
I will use it to create a 20" circle, suspended from a bolt at the center. It should be able to hold 350lbs pretty much evenly distributed over its surface.
There is already a generous safety margin built into the 350lbs estimate.
What is a reasonable choice of steel plate (steel type + thickness) for me to go with?
Just to be clear, this is not a critical application -- ie, no one will be hurt (fall/get squashed) if this fails.