Tembo Steels is the first company in Uganda and in east Africa to have invested in TMT bars to maintain the international quality of Iron bars.

A critical aspect of TMT process is the cooling of the individual bars after the quenching process. Only a perfectly cooled steel bar will have the qualities of a genuine TMT viz a Perfect Round Shape, Perfect Micro Structure and Superior Strength.

At Tembo Steels, after a precisely monitored quenching process, each TMT bar is moved to a cooling bed for proper tempering.

Thermo Mechanically Treated (TMT)

Thermo mechanically treated (TMT) steel, can be described as a new-generation-high-strength steel having superior properties such as weld ability, strength, ductility and tensile strength, which meet the highest international quality standards.


  • Resists fire: Withstands temperatures up to 500o C.
  • Resists corrosion: The TMT process gives the bar superior strength and anti-corrosive properties.
  • Earthquake resistance: The soft ferrite-pearlite core enables the bar to bear dynamic and seismic loading.
  • Malleability: TMT bars are most preferred because of their flexible nature
  • Enables welding: They have fine welding features.
  • Bonding strength: External ribs running across the entire length of the TMT bar give superior bonding strength between the bar and the concrete.
  • Cost-effective: A high tensile strength and better elongation value gives you great savings

How Tembo TMT Steel is prepared:

Under thermo mechanical treatment, the steel bars are passed through a specially designed water-cooling system where they are kept till the outer surface of the bars becomes colder while the core remains hot. This creates a temperature gradient in the bars. When the bars are taken out of the cooling system, the heat flows from the core to the outer surface, further tempering of the bars, which helps them attain higher yield strength. The resulting heat-treated structure imparts superior strength and toughness to the bars. The microstructure of the core is a very fine-grained ferrite and pearlite. TMT bars are also known as 'quenched and tempered or High Tensile rebars', because of the quenching and tempering processes involved in making the bars.

The production of quality TMT bar depends on three major factors - quality raw materials, a properly designed and automated mill, and a well-designed quenching and tempering technology. All rebars must be purchased based on the properties of yield strength, tensile strength and elongation values

So next time you go in for a rebar choose the genuine one. Choose only Tembo TMT.