The pillar, which weighs more than six tons, is said to have been fashioned at the time of Chandragupta Vikramaditya (375–413) of the Gupta Empire,[1] though other authorities give dates as early as 912 BCE.[2]...The pillar has attracted the attention of archaeologists and metallurgists and has been called "a testament to the skill of ancient Indian blacksmiths" because of its high resistance to corrosion,[4] due to both the Delhi environment providing alternate wetting and drying conditions, and iron with high phosphorus content conferring protection by the formation of an even layer of crystalline iron hydrogen phosphate.[5]
- Halil
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