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aldebaran1today at 2:04 PM1 replyview on HN

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surgical_firetoday at 2:21 PM

No.

> When some normally ductile metal alloys are cooled to relatively low temperatures, they become susceptible to brittle fracture—that is, they experience a ductile-to-brittle transition upon cooling through a critical range of temperatures.

That we did not know how steel behaved under low temperatures in building ship husks does not make it unpredictable. It was an engineering failure.

Unpredictability would be if steel behaved fine in 2 ships, cracked in 3 ships under low temperature for becoming brittle, in another ship it turned into gelatine, and in another it behaved fine but gained a pink color.

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