Am 31.01.21 um 00:49 schrieb roxanna Mason:
They are similar to those ~5 gal soft drink containers which I hydro
tested until my arm gave out at 1100 psig. The tank kept yielding like
bubble gum as the yield pressure kept approaching ultimate tensile
strength. 300 series SS is an incredibly forgiving metal alloy which
gives plenty of warning before failure, ~ 40% between YS and UT. One
reason why SpaceX is using it in their Starship before progressing on to
higher performance alloys like A286,maraging,etc.
I have lots of other experiences that would be of interest if you want
to contact me off list.