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So the Brits, using Swedish steel, made from Swedish ore as early as the 1700 invent a new process where they remelt it in crucibles so there are no soft spots. This is "cast steel" This process...

There is a real long answer to this question, but maybe I can get you started and not make you suffer too much. Firstly, Sheffield steel and Soligen steels have something historicaly in common. They...