It's an old question, but one that is worth asking. What kind of metal can be forged into weapons of war
The answer is: Anything that has a good strength-to-weight ratio and is easy to work with. This is why steel was used for centuries for weapons and armor. It's also why modern high-tech weapons use titanium or carbon fiber composites instead of steel
But it turns out there are other metals out there that have similar properties, which makes them ideal for making weapons. Here are some examples:
what kind of metal can be forged