Alright. Let's take a look back at some of the scrap I found welded to those dog sculptures that I mentioned in my adze post. These horseshoes were part of the sculptures that I broke down into simpler components. I only realized that it was wrought iron the same day I have posted this.
When I was forging a new bottle opener, I decided to take a bit of the horse shoe scrap and forge it out, when I was punching the hole in for actually opener part, the piece was cooling quickly and began to fracture and split. I didn't think much of it until I tossed it aside with a bit of frustration due to my own error, but while I was re-heating a new piece of steel to be forged I took a look at the cooled 'failure' and noticed a certain waviness since the paint had burnt away.
Soon after I finished the bottle opener I set off to hacksaw and bend the piece to notice the best surprise ever to me.

I am now in the possession of wrought iron. Wrought iron is basically iron that has silica inclusions in it as a sort of impurity that give it that fibrous crystalline structure. Unlike mild steel or carbon steels, wrought iron has little to absolutely no carbon content in it and the very fact it has silica in it allows it to be welded upon itself with greater ease and no flux.

This stuff is the very reason why the blacksmith is called such, because iron is the black metal.