Ulfberht Sword- viking sword made with forged steel. High carbon blade made this a very strong and durable weapon. See UTube or Netflix for 1 hour doc on how a modern day blacksmith recreated the sword using ancient techniques- way cool.
From boat grave I in Vendel. The famous burial place at Vendel church was found in late autumn 1881 when the cemetery was expanded. In Swedish prehistory, the Vendel era was a part of the Germanic Iron Age (or, more general
Ulfberht Sword ~ Advanced weapon of its time. Archaeologists have been trying to figure out how the Vikings could use such pure metal. While most Viking blades were found to have been composed of slag-ridden, low-carbon steel, these blades' metal was COMPARABLE TO the strength of MODERN STEEL. The mystery was how the Vikings created these blades while the rest of Europe was still making steel that could shatter like glass. 170 have been discovered all dating from 800 to 1,000 A.D.