It’s is not until the beginning of the Proto-geometric Period that we begin to see significant iron in Attica. These objects date from the middle of the eleventh century.
During the early, middle, and late Geometric periods (ending in 700 B.C.) we see a combination or iron and bronze metalwork in graves. Iron dominates as the metal of weaponry. The reason for this is that iron is 12% lighter than bronze and able to hold its sharpness longer, making it the metal of choice for swords and spears.