What relatively inexpensive material is mentioned as aiding Starship’s potential for low-cost, high-frequency flights?

Answer

Stainless steel

Starship aims to invert the historical trend of large rockets being expensive by enabling cheap refurbishment enabled by its design simplicity, which includes using relatively inexpensive materials like stainless steel.

What relatively inexpensive material is mentioned as aiding Starship’s potential for low-cost, high-frequency flights?

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