5 Interesting Facts on the Steel _ TMT Bar of India | SRMB Skip to main content
5 Interesting Facts on the Steel _ TMT Bar of India

5 Interesting Facts on the Steel _ TMT Bar of India

Steel is crucial to the development of any modern economy and is considered the backbone of human civilization.

India’s economic growth is contingent upon the growth of the Indian Steel Industry. Consumption of steel is taken to be an indicator of economic development.[1] 

A TMT bar is specially treated as a high-strength deformed steel bar.

It is manufactured using the latest technology. It is superior in quality and strength compared to ordinary steel bars.

Here are a few important facts about TMT bars:

  1.  The TMT bars obtain their strength from Thermo-Mechanical Treatment they undergo.


Under this process, ordinary steel bars are first subject to intense cooling (through the quenching process in the Tempcore cooling system) just after they have come out of the rolling mill.


The sudden quenching process reduces the temperature of the outer layer, thus, making it hard.


However, the core remains hot. After further atmospheric cooling, it tempers. This makes the TMT bar ductile, super tough and gives it high strength.


  1. In ordinary bars, the excessive presence of carbon affects its weldability.

However, this problem doesn’t exist in TMT bars.


The carbon content in TMT bars is low, thus, improving its ductility.


It is usually restricted to 0.2% to give the bars superior weldability without affecting its quality and strength.


The joints of the TMT bars can be easily welded using ordinary electrodes.


  1. TMT bars don’t just have better ductility and malleability; they are also earthquake-, thermal-, and corrosion-resistant.


 These bars do not lose strength at their welded joints and are safe to use for any kind of construction work.


India is a developing country and thus the economy is largely dependent on this sector.

A former report from IBEF stated that “India’s finished steel consumption grew at a CAGR of 5.69 per cent during FY08-FY18 to reach 90.68 MT.”[2] 

Indian steel industry is in a stage of constant growth. The process of production of TMT bars is as per the recent technological advancements and makes them better than before.