Iron pillar in Delhi unrusting quality

1. METALLURGY IN INDIA
REF: S. Srinivasan and
S. Ranganathan
Department of Metallurgy,
Indian Institute of Science,
Bangalore

2. The commonly used metals in
antiquity include
gold,
silver,
copper,
iron,
tin,
lead,
zinc and mercury.

3. Let’s have a brief review on
synoptic look at some aspects of
the early use of metal in a global
perspective.
It throws light on some of the
achievements of ancient Indian
metallurgists.
Its heritage in metallurgy, medicine,
mathematics and astronomy is a
matter of pride for India.

4. IRON

5. Iron occurs in the native metal state
as meteoric iron which was
exploited by the North American
Indians to make weapons.

6. Meteoric swords are better than late
bronze and early iron in terms of strength
and durability, but cannot compare to
modern steel, even the most basic 1045
carbon steel will be stronger. Meteoric
swords have no special properties (other
than in some cases rust resistance), they
were not harder, not stronger and nort
sharper - just very unique, rare, and of
course, very cool!

7. Several other contemporary sword
makers have also tried their hand
at making meteoric swords -
another well known example was
inspired by the Meteoric swords in
the movie 'the Last Airbender'.

9. The kingdom of martial art- Kalari
payattu

10. The iron pillar of Delhi is a
structure 23 feet 8 inches (7.2
metres) high with 16 inches
(40.64 cm) diameter that was
constructed by Chandragupta II
(reigned c. 375–415 CE), and
now stands in the Qutb complex
at Mehrauli in Delhi, India.

11. Why was Iron pillar made?
According to a popular translation of the Brahmi
script upon the Iron Pillar of Delhi, the pillar
was made for a king (presumably of the Gupta
period, given the era of its creation). ...
Inscriptions on the Iron Pillar in Qutab Minar
complex. It was also made to honour one of the
most important Hindu gods – Vishnu.

12. Why Iron Pillar has not rusted?
Iron pillar of Qutub Minar is not rusted because it
was made by 98% wrought iron. Presence of
high amounts of phosphorus (as much as 1 per
cent against less than 0.05 per cent in today's iron)
and absence of sulphur/magnesium in the iron are
the main reasons for its longevity.

13. Who shifted Mehrauli pillar?
However, in 1191, when King Prithviraj
Chauhan who was the grandson of
Anangpal, was defeated by Muhammad
Ghori army, Qutb-ud-din Aibak built a
mosque named Quwwat-ul-Islam in Lal Kot.
It was then the pillar was moved from its
original location to its current position in front
of the mosque.

14. Thank you
Jai Hind!