Metallurgy in india

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. M eteoric 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 '.

8. The kingdom of martial art- Kalari payattu

9. 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 .

10. 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.

11. 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.

12. 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.

13. Thank you Jai Hind!