Damascus steel
Turkish bladesmith makes special swords, knives with ‘Damascus steel’
A bladesmith from the eastern province of Malatya has become famous for producing and selling swords and chef knifes made with a special kind of steel called "Damascus steel" across the country and abroad.
Damascus blacksmiths had made steel blades with carbon nanotubes long before they were scientifically discovered
This is one of those stories about a technology invented and then forgotten. For example, when the Romans invented concrete and then another civilization reinvented it thousand years later. Well, it turns out that the skilled Damascus blacksmiths had produced blades containing carbon nanotubes at least 400 years before modern science began to understand their strength.