TMT Bar | TMT Steel Bar Full Form

What is Full Form of TMT Steel Bar?

Thermo Mechanically Treated Steel Bar.

The TMT is advance recent technology to produce high strength deform steel bars. The reinforcement high strength was achieved by the use of this technology.

TMT Bar | TMT Steel Bar Full Form

In this process of the production of TMT bar the steel is cooled immediately after the hot rolling. When the temperature is immediately reduced a hardened layer is produced with internal hot still. This phenomena increases the strength of the bars.

Due to the decrease of carbon content in TMT steel bars following advantages was

Higher strength

Weldability

Bondability

Thermal resistance

Superior ductility achieved

It's also has a good cost competitiveness with CTD bars.

This process inline water cooling of hot rolling bars at the temperature of 1000-1100 centigrade. Direct water cooling will reduce the surface temperature of bar up to 200 centigrade.

The flexibility of TMT for different grades can be achieved by controlling the production process such as water pressure, volume of water, the number of water jackets for quenching and equalization of temperature.

These bars are manufactured under three grades the minimum yield strength of 414, 500 and 550MPa.

TMT bars give better ductility as compared to CTD bars. The TMT bars are made up of under the recommendation of (IS: 1786 - 85).


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