GREAT WORK but one thing, it would not penetrate that easily unless it was like iron or even maybe mild steel. The thing is almost all armors from Europe was made with much better alloys.
A weapon like that was to "ring there bell" so much so that it can stun them for a bit and even lose the will to fight on. It will make someone very sick. They did something like this in real life in National Geographic with a man in Full Gothic plate; he was in shock and sick lot the will to fight on.
Look it up in "National Geographic Medieval fight book"
But hey eater way this knight would have been knocked down and maybe taking as POW