LafayetteCCurtis beat me too the parry as it were

but I a a hobby blacksmith and i can easily make a "usable" sword, however the word usable is subjective. So many words in our conman tongue mean many different things or rather conjure up different meanings in our heads when we read them. Usable and steel are no different.
Steel is a matrix of iron and carbon. Iron is an element that under heat and pressure can be formed into a malleable metal. Bronze is an alloy of copper and tin. Three different metals and all three will make cutting weapons but each metal will determine the potential size and shape of the weapon made.
Flexible, tough and hard also mean different things to a smith than the avg person. Flexible is the amount of cast it can take before taking set or breaking. Hard refers to the temper hardness and tough refers to how well it will hold its edge or resist abrasion
The metals used then can not compare not surpass the metals used in forging today. To produce the high end quality weapons of the period we think of does requires a master smith and several highly trained assistants working together controlling many variables and if just one of them is off by a few 100 degrees it is all for nothing.
A poorly made flat piece of metal will take an edge and bend when used but will still do the job. It may not be able to do the job as long as a flexible hard, tough weapon made by a master.
Sry if I went overboard but I love talking shop
