What is black iron? - Finishing
30/6/2008· Actually black iron, by means of sheet, is Iron that is treated to withstand high heat. I''m not sure what type of iron it is or how it''s prepared exactly, but I do know it''s iron and not steel. I know this because a lot of our scrap cannot be tossed in the steel/galvanized scrap bins because the recycler will not take ferrous materials.