I found this interesting video on the history of Japanese Tamahagane steel. Many people enjoy collecting and using Japanese straight razors, some of these blades are made of modern Yasuki Steel. This is a premium Japanese steel, manufactured by Hitachi Metals which is similar to Tamahagane steel, but created by modern methods. This steel has a high carbon content and is known for taking a supremely keen edge.
Enjoy!
Enjoy!