The A to Z of TMT Bars produced in India

Posted by MS Life on March 18th, 2020

Steel plays an important role in the growth and development of mankind. Today, it is difficult to see the world without steel. The art of crafting steel by smelting iron ore was known and practiced in India from very early times. All the steel companies in India produce iron and steel from the iron ores. With the introduction of newer and better technologies in the field of construction, the demand for higher yield strength rose. One such ground-breaking technological progression was the Thermo Mechanically Treated (TMT) process on hot-rolled reinforced bars.  In this article, let's intend to explore the world of TMT Bars.

TMT Bars are strong reinforcement bars with a tough outer core and a soft inner core, features high tensile strength, high ductility and anti-corrosion properties. They are significant and famed for their tough outer crust, beneath which sits the soft inner core. This is why they are an instant hit and have been increasingly popular right from their inception.

Until the 1960s, mild steel bars were used to buttressing the concrete. These reinforced bars had a tensile strength of 250 MPa. The HYSD and TOR bars, which have been the ancestors of the new TMT bars, have had everything from strength to durability, but the only thing they lacked in was the tensile strength, which is one of the paramount qualities featured by the TMT bars.

Well, most of us are oblivious to the making process of these bars. Let's look into the manufacturing steps of TMT bars.

The manufacturing process of the TMT bars is very interesting, consisting of multiple steps such as:

• Scrap melting
• Ingot Moulding
• Rolling and heating in the furnace
• Cooling with the help of water jets
• Forming the steel into the final product

The significant thing in the manufacturing process which is unique to these bars is that they are heated and then cooled. The concoction of these two different processes, i.e., heating and cooling refine the microstructure of the bars.

The TMT reinforced bars were of Grade Fe 415, Fe 500 emerged in 1979 as conformed to IS 1785:1979. Since its introduction, there has been a massive demand for these reinforced steel bars. In 1985, a higher grade Fe 550 TMT steel bar came out as conformed to IS 1786:1985. Another higher grade and modified variant, Fe 600 was introduced in 2008 conforming to IS 1786:2008. Ideally, 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, 32 mm, and 40 mm TMT bars have the maximum demand in the market.

CONCLUSION

Building an abode of your dreams is one of the best periods of your life! Choosing your materials from the best steel companies in India will cut your hassles by half. The bars manufactured by MS Life are top-notch, crafted by the state-of-the-art German technology and manufactured using high-quality raw materials that ensure class and strength. When it comes to TMT bars, one cannot go wrong such is its prowess.