OK, I'm certainly no engineer. But it strikes me that one could get a sense by looking at LPG and LOX truck tanks. For LPG tanks, I found one source:[0]

OK, I'm certainly no engineer. But it strikes me that one could get a sense by looking at LPG and LOX truck tanks. For LPG tanks, I found one source:[0] Material: 16MnR Yield strength (Mpa): 345 Permissible stress (Mpa): 170 Comparison: The wall thickness is ... 10-14mm. I found that SpaceX is using 301 stainless.[1] But I haven't found anything about thickness. Anyone know? 0) https://www.anstertrailer.com/lng-lpg-tank-trailer-guide/ https://www.anstertrailer.com/lng-lpg-tank-trailer-guide/ 1) https://www.popularmechanics.com/space/rockets/a25953663/elon-musk-spacex-bfr-stainless-steel/ https://www.popularmechanics.com/space/rockets/a25953663/elo...