The iron pillar of Delhi dates to 912 BC. The medieval period of European History dates to 476 to 1453 AD. There are periods of other places referred to as medieval because of some analogy to the European Middle Ages, but I do not know the dates for one in India.
There is a link below.
The pillar in Delhi, known as the Iron Pillar of Qutub Minar, is made of wrought iron and is a testament to the advanced metallurgical skills of the Gupta period. The pillar's resistance to corrosion is due to the high phosphorus content in the iron and the presence of a protective passive layer. This indicates that the Guptas had a sophisticated understanding of metallurgy and metalworking techniques.
The Iron Age is typically followed by the Middle Ages (also known as the Medieval Period).
asoka
CHANDRAGUPTA
7î7
The Iron Pillar in Delhi, India is made of wrought iron, not rock. It is known for its high corrosion resistance due to the composition of the iron used and the weathering process it underwent.
This is not pure iron but a special steel.
Effect of acid rain on Iron Pillar of Qutub Minar is- When acid rain falls on the Iron Pillar the colour of Iron Pillar changes from red to black. Other factors like pollution and dust are also responsible. The government should take some strict actions on this issue.
the postmodernists. ----------------------------------- A+ -- Medieval period
asoka
The Ashoka pillar, made of wrought iron, remains rust-free due to the absence of impurities like sulfur and phosphorous in the iron, and the protective layer of iron oxide that forms on its surface, preventing further corrosion. Additionally, the pillar's composition and environmental conditions at the site of its installation help in its preservation.
it weighs about 6 tons