Europe-ன் வளர்ச்சிக்கு காரணமான சேரர்கள்

Wootz steel is an ultra-strong, ancient steel developed by Chera metalworkers in places like Kodumanal in Tamil Nadu. Known for its sharpness, strength, and distinctive surface patterns, this metal was traded across the ancient world and helped shape metallurgy in Europe and Asia.

Archaeological finds at Kodumanal

Excavations at Kodumanal in Erode district revealed Roman pottery, Roman coins, and ancient weapons dating back to the third century BCE. These artifacts proved that the town was an active trade center doing business with the Roman Empire thousands of years ago. The Chera blacksmiths kept their precise metalworking methods a secret, producing unmatched swords and arrowheads that could pierce armor.

How Wootz steel was made

• Iron pieces and wood dust were packed together in a furnace and heated continuously for several days.
• The furnace reached extreme temperatures between 1400 and 1500 degrees Celsius.
• At this high heat, carbon atoms from the wood dust were absorbed by iron atoms to form a tough compound called cementite.
• When the heated metal was hammered into swords, the cementite shifted to form visible wavy patterns on the blade.

Global trade and reputation

The metal was originally called urukku (melted metal in Tamil), which foreign traders pronounced as ukku before it became known as Wootz steel. In the third century BCE, the Greek ruler Alexander visited India and was presented with swords crafted from this steel, which astonished him with their quality. Arab traders later used the metal to produce Damascus steel, and by the seventeenth century, European nations imported large amounts of Wootz steel to build bridges and advance manufacturing.

Scientific study

• In the 1860s, researcher T. H. Henry analyzed Wootz steel to determine its exact chemical composition.
• The analysis revealed 1.34 percent combined carbon, 0.31 percent uncombined carbon, 0.17 percent sulfur, 0.04 percent silicon, and 0.03 percent arsenic.
• Renowned scientist Michael Faraday was fascinated by the strength of Wootz steel and carried out numerous laboratory experiments trying to recreate it.