TMT is a new age and technology advancement over CTD steel for production works of high strength. TMT steel bars are meant for concrete reinforcement. Higher strength is obtained through thermo mechanical treatment when the carbon contents is brought down making way for improved ductility.
Deciding the proportion of carbon content in steel has been a major challenge. Carbon contents in steel is essential to achieve the required strength but excess carbon threatens its weldability. In TMT bars, the problem has been eliminated by restricted the carbon to 0.2% .
Rapid quenching of the hot bars through a series of water jets improvises the cores. After they roll out of the mill stand the bar core cools down slowly. The strength of the bars is monitored with controlled optimised water pressure for their pearlitic core and a tough surface of tempered martensile to provide optimum strength, ductility and toughness.
Fulled with excellence fatigue & uniform properties, bonded strength and resistance to heat upto 600°C TMT bars certainly provide good ductility, optimum yeild strength and bendability, better tendency for ageing and resistance to earthquakes and are less prone to corrosion as compared to CTD bars
PRACHAND TMT bars have higher thermal resistance even at temperature upto 600°C. The inherent strength of PRACHAND TMT bars lies in its power to resist softening and is attributed to the Tempored Martensile layer on surface and absence of cold worked structural zone. Thus the tempered PRACHAND TMT bars are extremely suitable for places that are highly prone to fire hazards.