From “The Efficient Engineer”. ( YouTube / Nebula )

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Stainless steel has earned its reputation as one of the most corrosion-resistant materials in engineering. But when used in the wrong environment, that reputation can be dangerously misleading. This is exactly what happened in 1985, when the roof of a swimming pool in Uster, Switzerland collapsed without warning, killing 12 people and injuring many others.

In this video, we explore the science behind stainless steels – what they are, how they achieve their remarkable corrosion resistance, and the unexpected failure mechanisms that can turn a trusted material into a critical point of failure.