Felix Schlang at What About It? provided another great update on SpaceX. He noted the new alloy 304L that will be used for some parts and progress on the heat shield. There was a reminder that Elon expected to go through about twenty Starship prototypes before reaching the first commercial-ready Starship.
Some parts will use 304L, as it has higher toughness at cryo temps. Will move to internally developed alloys probably end of year.
— Elon Musk (@elonmusk) March 14, 2020
We’re now building flight design of Starship SN1, but each SN will have at least minor improvements, at least through SN20 or so of Starship V1.0.
— Elon Musk (@elonmusk) December 28, 2019
SOURCES- Elon Musk, Felix Schlang – What About It?, SpaceXvision
Written By Brian Wang, Nextbigfuture.com