>>19684518"In summary, while the Vikings did not invent metal tempering, they were skilled practitioners of this technique as part of their advanced metalworking processes."
they developed innovative techniques for working with the steel available to them
they demonstrated remarkable skill in forging and manipulating iron and steel, as evidenced by the creation of the Ulfberht swords, which were considered exceptionally strong and durable.
Additionally, the Vikings employed unique practices such as incorporating bones into the smithing process, which led to the accidental discovery of a rudimentary form of steel
