Wow Fact
Forged in the 5th century CE, it stands in open Delhi air.
2026-11-17
The Iron Pillar of Delhi — 1,600 years old —
has never rusted.
Forged in the 5th century CE, it stands in open Delhi air. Modern metallurgists cannot fully explain the phosphoric passivation layer protecting it. Ancient Indian metallurgy at its most astonishing.
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