Vikings managed to get some crucible steel and made the best blades of the day with it: https://www.thevintagenews.com/2018/02/21/ulfberht-viking/ https://www.

Vikings managed to get some crucible steel and made the best blades of the day with it: https://www.thevintagenews.com/2018/02/21/ulfberht-viking/ https://www.thevintagenews.com/2018/02/21/ulfberht-viking/ https://en.wikipedia.org/wiki/Ulfberht_swords https://en.wikipedia.org/wiki/Ulfberht_swords