+1 this is an interesting point...but as the german industry was starving for certain raw materials later in the war...armour also suffered. i have seen pictures of panthers and very late tigers that show damage from enemy tanks and anti tank guns to be a chunking effect on the late armour.normally there would be a mark on the armour where the round hit dug in a bit and then bounced off, instead what was happening at the end of the war was a round would hit,break a large chunk out and bounce off leaving fractures in the hit area as well. as noted by british,american and russians after the war during target practice on german tanks used for evaluation. wheather you like von wera's post or not, it absolutely is correct and has merits. i guess we mock what we dont understand or what doesnt fit into our world the way we want it to. 
It has no merit at all. The term "steel" is a generic name for many different alloys, which all have a similar (not exact) basis to start with. It is not incorrect to refer to any of them as "steel".
pembquist was close. Wood is a classification or material, just like steel is.
I can say we have wood floors in our house and be quite correct, even though they are actually comprised of engineered wood, white oak, and red oak. Yes, even within the categories of wood are sub classes.
Just like steel. Carbon steel, low carbon steel, high carbon steel, chromium steel, stainless steel (an a dozen variants of that) are all correctly called "steel".