Process
EMSON TMT Bars exhibits properties of a low carbon hot rolled steel which obtains its high strength from a mill heat treatment and tempering process.


Quenching:
The hot rolled bar leaving the final mill stand passes through a water cooling line where the surface layer is quenched to form martensite while the inside core remains austenitic.
Self Tempering:
The bar leaves the cooling line with a temperature gradient through its cross section. The natural heat within the core, which is still austenitic, flows from the center to the surface resulting in self-tempering of the martensite which is responsible for high strength of the bars.
Atmospheric Cooling:
Finally the austenitic core is transformed to a ductile ferrite pearlite structure during the slow cooling of the bar on the cooling bed which gives higher bendability and ductility to the bar.
Thus, these bars exhibit variation in micro structure in its cross section with a tough tempered martensite at the surface layer and a ductile ferrite-pearlite in core.
Manufacturing Process for TMT Bar
Properties of EMSON Bars
EMSON bars are manufactured using the latest technology and best raw materials having superior chemical properties.
Strength
The strength of a building depends upon strength of TMT bars used in making it. Emson bars provide excellent strength with high elongation and yield.
Bend-ability
The bendability greatly surpassing the ISI standards make EMSON bars highly capable of sustaining massive strain under great pressure, which makes it resistant.
Weldability
The bars are produced with a low carbon equivalent which demonstrates high weld- ability without weakening up at joints. It can also be butt- Welded and lapwelded using rutile coated electrodes.
High thermal and natural resistance
The bars are capable of high strain for extensive durations. With high strength and ductability it is earthquake resistant. It gives all round life protection.
Corrosion resistant
EMSON bars are produced by thermo- mechanical treatment and not by cold twisting which results in superior corrosion resistance characteristic.
Product Specification
Product Specification
(Typical Values for 90% of heats)
(in case of weldonate bars, the carbon content & the carban equivalent should be 0.25% & 0.42% max respectively)
Chemical Properties
Chemical Properties
Mechanical Properties
Chemical Properties