"Density and weight are there, but I'd like to know, how hard and elastic are you talking about this black basalt?" Asked Guan Yu.

Elder Wang nodded and said, "You're right. This hardness and toughness are his strengths. Most of these black basalt iron can be made into a sword or a soft sword. This is the most ideal material because it's heavy. Normally no one can make armor with this kind of basalt iron. Although the hardness is there, it's too heavy for ordinary people to wear, so they can't make a fine sword. Well, first, this black basalt has good elasticity.

When made into a sword, it not...