Indian Wootz Steel

Timeline

1. 1031–1040Thanjavur and the Kaveri Delta · Tamil NaduIn the 1030s the Chola dynasty controlled southern India's major ports and mining areas; artisans sealed iron ore, charcoal, and leaf-shaped carbon sources in clay crucibles, producing high-carbon patterned steel ingots after several days of reduction and carburization followed by quenching. The ingots were exported via ports at the Kaveri river mouth to Sri Lanka, Southeast Asia, and West Asia.
2. 1031–1040Deccan Plateau mining areas · Deccan PlateauArtisans in the Deccan states used crucible recipes and kiln-sealing techniques passed down through generations, controlling temperature curves and carbon content to achieve uniform patterns. Local steel ingots entered Arabic and Persian commercial literature under the name 'wootz', becoming a sought-after imported material for West Asian bladesmiths.
3. c. 1035–1201Persian Gulf and Levant trading ports · Persian GulfAfter Indian wootz ingots arrived in Basra and Damascus, West Asian bladesmiths repeatedly folded and forged them, revealing water-like patterns; the finished blades were called Damascus steel swords. By the 1030s, Arab geographers and merchants had already recorded the export of high-quality Indian steel, establishing its cross-civilizational technological reputation.