심해의 미친 수압을 씹어 먹는 괴물 잠수함 강철의 비밀│밀리터리사이언스 Ep#51. ‪@kfnplus‬

The Soviet Alpha-class submarines, made of titanium during the Cold War. HY Steel, the material used in the LA-class submarines that emerged as their rivals. A precious commodity in the world of special steels, crafted from carefully selected expensive materials! The story of HY Steel, the metal that safely protects submarines from the pressure of the deep sea and the shock waves of depth charges! Submarine warfare intensified after World War II! Fierce competition among major powers to develop special steels for submarines was inevitable! Was the biggest reason why countries varied the types and ratios of elements to create strong alloys ‘this’? HY-100, used in the Korean Dosan An Chang-ho-class submarines. Korea had the technology to produce HY-130, which is even harder than HY-100, but there was a specific reason why they didn't use it? Difficult and complex, yet easy to understand: the story of HY Steel and special steels, explained simply by Dr. Im Du-won, a Ph.D. in Materials Engineering! 💚KFN PLUS+💚    / @kfnplus