Starships are supposed to Fly as Space X believes

"The best structure choice on the subject of is 301 hardened steel," he said. "At cryogenic temperatures, 301 spotless really have about a similar compelling quality as a propelled composite or aluminum-lithium." At high temperatures, that treated steel performs much superior to composites. "For a reusable ship, youre coming in like a meteor. You dont need something that melts at a low temperature," he said. "This is the place steel is amazing....