I was lucky enough to get two bell & gosset expansion tanks, an 80 and a 60 gallon. They are much thicker steel than a regular water heater. You could say that's because they are meant for air, but steel well tanks are meant for air and they are thinner than most water heaters.............I wasn’t trying to compare the two other than if both are used for air. One would be smaller but same situation. Steel tank with air.
Anything less than ~300psi is not going to rip open a steel tank fast enough to equate to an "explosion". The real threat is it becoming a projectile, and even that is of low probability unless the compressor gets stuck on. I repeat my warning, make sure you have a properly working relief valve.