TMT Steel bars, or for that matter, any Reinforcement Bars (Rebars) are used in longer sections for strengthening a structure. Our MHLAXMI TMT Bars are manufactured to have a Weight-per-meter (WPM) on the negative side of the tolerance range i.e., by -2% of the nominal weight as specified and allowed by the Bureau of Indian Standards. Hence, you get more length of MHLAXMI bars in the cumulative weight. This saves you Rs. 1400/- Per Metric Ton (PMT) to Rs. 2,200/- PMT.
MHLAXMI TMT Bars are certified with the ISI Mark under the
IS 1786 : 2008 standard. The equivalent ASTM Standard is ASTM A615 Grade 75 & Grade 80 for deformed and plain carbon steel
bars for concrete reinforcement.
Installed Capacity: 100,000 Metric Tons Annually.
Average Company turnover: Approximately 100 Crores ($11 Million+)
Similar to the renowned TEMPCORE™ or THERMAX™ processes, our rolling mill is equipped with a quenching system that works on the same basic principle. There are three steps to this process: Quenching, Self-Tempering and Atmospheric Cooling.
Quenching begins when the final section of a finishing pass outputs the bar into a quenching box. Within this, there are various nozzles that are powered to inject high-pressure water onto the passing bar. Rapidly quenching the hot bar forces a layer of martensite to be formed on the surface of the bar. Martensite is a microstructure phase of alloyed iron which is very hard in nature and provides strength to the bar.
The bar leaving from the quenching box has a gradient of heat throughout its cross-section – Higher Inner Core Heat to Lower Outer Surface Heat. As the heat flows from the core to the surface, the surface becomes ‘Tempered Martensite’ while the core is still Austenitic at this stage.
While on the Cooling bed, the temperature of the bars keeps falling to the atmospheric temperature. This means the temperature gradient is still active and the heat is flowing from the core to the surface. Gradually the phase of the core turns from Austenitic to a Ductile Ferrite-Pearlite phase. While the out surface keeps self-tempering to achieve a more hardened surface. The combination of Tempered Martensite and Ductile Ferrite-Pearlite is the resulting Reinforcement Steel Bar which is strong as well as ductile.