Things To Keep In Mind When Buying TMT Bars For Your Construction Project

TMT Bars for Construction Project

One of the most crucial construction materials, TMT steel bars or thermo-mechanically treated steel bars are widely used in various kinds of construction projects, be it the construction of multi-storeyed high rise building or any other civil engineering structures. All over the world, buildings need reinforcement to secure the structure and this is where TMT bars play a crucial role by being the most important construction material used for reinforcement of the building structures. Thanks to their exceptional strength and bonding properties, the builders across the globe are investing in high-grade TMT bars to impart the much-needed resilience to their buildings that do not fall short in any aspect.

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Out of the hottest fire comes the strongest steel

Since TMT bars are widely used, it becomes even more important to be extra conscious of certain aspects when buying TMT bars online or through a TMT bars manufacturer But before we delve deeper into that, let us see why you need TMT bars for your next construction project.

Why choose TMT Steel Bars for Your Construction Projects?

From ensuring longevity to providing buildings with high tensile strength, TMT steel bars play a major role in modern construction system. They efficaciously strengthen the construction structure, provides flexibility, endure stress and safeguard the structure from damage. Owing to these qualities, TMT has become the cornerstone for any modern day construction, be it hospitals, highways or flyovers.

TMT Steel bars are manufactured by leveraging thermo-mechanical treatment. It involves the following steps:

    • Quenching
      The hot-rolled bars that come out fresh from the finished mill are made to enter ‘thermex system’ which is a water-spray cooling system. Once the bars are passed through thermex system, their outer core starts to cool down in a rapid manner. Consequently, a martensitic rim is created on the outer layer while leaving the inner core hot.

The cooling process is known as quenching and is considered one of the most integral steps involved in the manufacturing of TMT steel bars.

    • Self-Tempering
      Next comes self-tempering. When the rebars come out of the thermex system, the heat flows from the hot core to the cold surface, creating a strengthened structure known as ‘tempered martensite’.
    • Atmospheric cooling
      After self-tempering, atmospheric cooling takes place. A cooling bed is required to carry out this process. From transforming austenitic core of the steel rebar to ferrite-pearlite structure (that will enable them to resist any seismic activity upon installation), the atmospheric cooling process includes numerous steps that eventually results in the formation of a solid outer layer, leaving the core ductile that provides additional strength to the overall structure.

Thanks to their intricate manufacturing process, the resultant TMT bars are highly ductile, weldable, earthquake and fire-resistant. Another important thing to note here is that TMT steel bars are cost-effective, meaning if you are using TMT steel bars for your construction projects, you can save as much as 20% of the steel without compromising on its strength. The cost-effectiveness of TMT bars comes from the fact that they have higher tensile strength as well as elongation properties that directly translate to reduced use of steel for the same purpose.

While TMT bars have numerous advantages, it often becomes difficult for the builders to choose the best TMT bars manufacturer who can provide them with the highest quality TMT bars. To help you make a more conscious buying decision, we have curated a list of factors that must be considered while buying  TMT steel bars. Have a look:

    • Types of TMT Grades
      Three types of TMT grades are available in India, namely Fe415, Fe500 and Fe600. Generally, the higher the grade of the TMT bar, the stronger it is as compared to its counterparts. However, one must know that higher grades are also associated with reduced ductility.

For instance, if your construction project is situated in an earthquake-prone zone, you must use TMT bars that are ductile. Hence, lower grade TMT bars are mostly preferred in such cases. The best TMT bar is the one that offers the right blend of strength and flexibility.

    • Manufacturing Process
      Gone are the days when cold twisted technology was used by TMT bar manufacturers. With the advent of technological innovation, the present-day TMT manufacturing process has become far more advanced. The TMT manufacturing industry is leveraging innovative technology to produce high-quality TMT bars that also involves thermo mechanical treatment besides modern thermex cooling systems. Offering better flexibility and strength to the TMT bars, these modern technologies are a boon to the TMT manufacturers as well as to the builders.

That’s why whenever you are buying TMT bars, you must put an inquiry with the manufacturer/supplier and know more about the manufacturing process. It is essential to choose manufacturers who have complete control over their raw material selection and its chemical composition. Therefore, steel bar manufacturers with a fully integrated plant are high in demand.

    • Certifications
      Certification is one of the most important factors to consider while buying TMT steel bars. BIS and ISO certifications act in accordance with the safety standards. Apart from certifications, manufacturers stamps and information on the grade and length of the steel used must also be taken into consideration.
      If you are purchasing  TATA TMT bar or JSW TMT bar, you can be rest assured as these leading TMT bars manufacturers in India practice stringent quality control measures that further refine their technology-driven TMT bar manufacturing processes and  determines the price and availability in the market.
    • Corrosion Resistance
      Corrosion of structures is not just a durability-related concern. From reducing the cross-section to introducing additional stress points, this chemical process affects the overall stability of the structure. Often the bars are open to moist conditions thereby affecting the longevity of the building structure. You must check the corrosion and rust resistance properties of the TMT bars before going ahead with the purchase. In cases, you are sourcing TMT from a dealer, it is important to check the material storage at his end to ensure optimum TMT condition.
    • Bendability
      A lot of customers majorly focus on the strength of TMT bars without paying much attention to its bendability. However, both the aspects are equally important and preferred by project managers for engineering procurement construction requirement. While the high tensile strength of TMT bars keep the load off the structure, their bending capacity is ascertained by their bendability. Moreover, bendability is directly proportional to the ductility of TMT bars, meaning if a reinforced bar which is less ductile is bent, chances are that it will break faster than the one that is more ductile.

Since TMT bars are the backbone of the construction buildings, it is crucial to ensure the availability of TMT bars that fulfil the aforementioned criteria. With prominent suppliers like BuildSupply, you can buy quality TMT bars hailing from brands like TATA, JSW, SAIL among many others that will amp up your construction process like never before.


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