Quote Originally Posted by PairO'Dice Lost View Post
Logically, yes, particularly since modern steel has a higher iron content than the kind of iron people were using when those myths were being created.
Iron didn't hurt faeries because of its chemical composition. The same stories also said faeries were similarly affected by bread. A forged iron object (or a piece of bread or woven cloth) represent man's mastery over fire and using it to shape nature to his will. Refined steel (or modern plastics, silicon, or carbon fiber) should have a greater effect, but they don't. By the time of the industrial revolution and an abundant supply of high quality refined steel, the old fairy tales had fossilized from "our latest technological innovation, forged iron" to "iron in particular".