Bones Are Stronger Than Steel Ounce For Ounce
Ounce for ounce, your thigh bone is stronger than steel.
Reviewed by the CurioVault curator · 8 October 2026 · Editorial standards
Human bone is stronger than steel by weight. A cubic inch of bone can bear 19,000 lbs — about 4x concrete. Your femur is the strongest, able to support 30x your body weight. It's not solid — it's a composite of collagen (flexible) and hydroxyapatite (hard), with a honeycomb interior that makes it light and resilient. Steel snaps; bone bends and heals. That's why evolution kept it — lighter than metal, self-repairing.
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