There was a reminder that Elon expected to go through about twenty Starship prototypes before reaching the first commercial-ready Starship.
@elonmusk ???? ...— Evelyn Janeidy Arevalo (@JaneidyEve) March 14, 2020
Starship prototypes are made of 301 stainless-steel, you mentioned SpaceX will switch...
What is the new stainless-steel alloy mix that will be used?