Re: RGS #20

Brian, I think you are correct. I have attended some metallurgy classes years back, but don't use the science ordinarily, so probably haven't retained much. As I recall however, wrought iron has the carbon content reduced to a point in which the normally brittle iron is malleable enough to be worked ( hammered and bent) without cracking. Again if I recall correctly, the carbon content may not be entirely consistant, so taking a SWAG a wrought iron plate could have areas that are less malleable and more brittle which could lead to unpredictable fracture points. Just a guess.
Steel as I recall it has had all of the carbon removed, then a specific amount added along with other desirable trace elements to produce a given type of steel, best suited for some specific purpose.