I'm looking to build a fish-tank stand for a decently large fish tank (300 gal). I'm looking at building it out of A513 steel because that is easily available locally. However, I am having trouble finding a good yield stress to build my design on. A513 does not have a maximum yield stress requirement, so the measured results I find on the internet are all over the place!
Is there a reasonable estimate for maximum yield strength for A513, short of going to the company providing them the steel and asking them which specific supplier they are using, and then getting data from that supplier?