TMT stands for “Thermo Mechanical Treatment”. It is manufactured by a quenching and tempering process which allows the outer surface to cool much faster than the inner core, making a temperature gradient from the bar axis to the fringe. This results in a harder martensitic outer surface while the inner core cools slowly resulting in the ductile inner core. This entire process increases TMT’s tensile strength, weldability, and stress resistance.

Categories: Uncategorized