Titanic, sank due to the bad steel?

Recently a Russia fishing ship crash into a iceberg reminds people the accident in 1912. At that time a even bigger ship who called TITANIC crash into iceberg also, sank into water in only 2 hours and 40 minutes.

Guess what, that Russia ship survive! With the speed of 20 knots and hit into a iceberg which is mush more heavier than itself is greatly. I know i lot of people will think: “OK, for so many years the ship’s structure and the material are change significantly.” But that fishing ship was also an 1960’s so the gap is not so big.

Why a in-submergible ship’s structure broken so easily? A lot of question has mentioned but the main stream of the topic is about the steel it has used. Yes even the worst the steel is much more strong than iceberg. Image that ,a 100000 tons ship is not like a airplane upon the sky which is easily been destroyed by a little bird.   

It is the fault of ferritic steel.

Steel has different strength in different temperature. Question is not as we all know in our young7addccfe183ad6b81d57b148135fc621_m time. Titanic is not build but low price steel. It is made by one of the most expensive steel at that time. But in some certain temperature in Atlantic Ocean, the temperature will as low as -2℃. At that temperature the body of the ship is not become more soft. In fact it become harder, but more fragile. Fracture toughness is actually lower than the ship was build. At that time no one knows that because they don’t has X-RAY differential equipment.

Now we knows that, Titanic will broken into two part even it not crash into a iceberg. Technology  improvement is not free, sometime it will costs thousand life. But at least, our ship. even very little fishing ship will no longer afraid the threaten of iceberg.

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