I have heard of Cold Rolled steel, Castle Forged steel and Valerian steel and i was just wondering the difference between them.I know Valerian steel is by far the strongest and durable but what about the other two types? Do you know because i haven't read all the books yet.
Cold rolled steel is referring to rolled steel. It is referring to weapons made from rolled steel that is unrolled and stamped out. In real-life, rolled steel isn't nearly as strong as steel that is cast and forged. Think of a cheap dinner fork that you can easily bend and a nice dinner fork you can't bend at all. The cheap fork is stamp-pressed out of rolled steel and the nice fork is cast. In Game of Thrones, cold rolled steel is crap, but it's cheep and common. Castle forged steel is the best most people have available, much higher quality than cold rolled steel. Presumably it's forged in the castles of Westeros, including King's Landing. Valerian steel is special, rare steel that was anciently forged that is stronger than any other steel. They no longer make Valerian steel since the fall of Valeria. As such, the only Valerian steel available is by getting it from things already made. In real-life, it might be comparable to the extremely high quality steels forged into ancient katanas, ninja fighting swords from Japan. The Lanisters took a sword made of Valerian steel that had been passed down to Ned Stark and had it melted down, recast, then forged into two smaller swords.
