TMT

TMT

TMT or Thermo-Mechanically Treated bars are commonly used as essential input materials for home construction, building, and infrastructure projects to strengthen all cement and concrete structures, enhancing the overall longevity and safety of the projects. In the first step, the iron ore is processed into iron through a furnace or by direct reduction iron-making processes. In the blast furnace route, the output is liquid iron. Iron ore and scrap steel are melted in electric furnaces, such as electric arc furnaces (EAF) or induction furnaces (IF). Further, the molten steel is cast into solid billets. The billets are directly charged to the mill in hot conditions at approximately 1200 degrees Celsius for a prolonged period, leading to appropriate heat distribution across the material. The heated billets are subjected to a rolling mill process. Multiple sets of rolling stands exert pressure on the hot charge and gradually reduce its size as it moves through at high speeds. The last roll pass contains grooves that produce the ribbed structure, characteristic of TMT bars.

FAQs:

Q: What is the difference between the TMT bar and the MS bar?

A: TMT bars are thermo-mechanically treated, while MS bars are mild steel bars. TMT bars have higher strength and better corrosion resistance.

Q: What is the difference between the TMT bar and the High Yielding Strength Deformed (HYSD) steel bar?

A: TMT bars, undergoing thermo mechanical treatment, exhibit superior elastic properties compared to HYSD bars which are manufactured by cold working process, enhancing concrete reinforcement in construction. Their advanced manufacturing confers higher residual stress and elasticity to TMT bars over HYSD bars.