SX picked rolled steel (really, a custom variant) as a good tradeoff for performance, durability and cost. That was trying something different, and Relativity's goals for low-cost and reuse look much more like these goals
SX picked rolled steel (really, a custom variant) as a good tradeoff for performance, durability and cost. That was trying something different, and Relativity's goals for low-cost and reuse look much more like these goals