Wootz Steel Smelting

Timeline

1. c. 300–450Deccan region, South India · KarnatakaSouthern Indian artisans sealed carburized pig iron and charcoal in clay crucibles, heating them for long periods to form high-carbon steel ingots (wootz steel); the process became mature and stable by the 4th–5th centuries.
2. c. 500–600Malabar Coast · KeralaWootz steel ingots were exported from southern Indian ports to the Persian Gulf and Red Sea coasts; the "Indian steel" mentioned in Roman and Persian texts was related to this trade, becoming a raw material for transregional military and craft goods.
3. c. 600–700South India · South IndiaIn the 7th century, the states of southern India continued to produce wootz steel, and Arab geographers recorded its excellent quality; the craft was passed down orally within artisan families, providing the raw material basis for later Damascus steel forging.