User blog comment:Fairy Tail Grand Master/What is the hidden blade made of?/@comment-4862210-20120627211714

t could be titanium, but since Ezio's blade was easily severed, it can't, since titanium is too hard. Altair said that the metal needed to make two blade were getting harder to find, so it can't be steel. If it's a rare metal, then it's either platinum or iridium, but the former is more likely, because the latter is stronger than titanium.