Dwarkesh Podcast(@dwarkeshpodcast):Instead of Space Age carbon fiber or aluminum-lithium, SpaceX is building its Starship rocket out of stainless steel. Stainless steel is easy to weld, far cheaper, and under the right conditions, it has a similar strength-to-weight ratio as carbon fiber. @elonmusk explains:

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Dwarkesh Podcast@dwarkeshpodcast

2026.10.28 22:00

Instead of Space Age carbon fiber or aluminum-lithium, SpaceX is building its Starship rocket out of stainless steel. Stainless steel is easy to weld, far cheaper, and under the right conditions, it has a similar strength-to-weight ratio as carbon fiber. @elonmusk explains: