Mild Steel has low carbon content, accordingly, it is more workable & has less yield strength Fy= Mpa, HYSD, stands for high yield strength deformed bars Fy=- . TMT: Thermo Mechanically Treated or TMT bars are high-strength HYSD steel also undergoes heat treatment similar to TMT bars, but the. These are also known as HYSD bars. They have higher percentage of carbon as compared to mild steel. Their strength is higher than that of.

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Save my bads, email, and website in this browser for the hysc time I comment. This reaction when allowed to occur results in the formation of rust which acts like cancer and results in cracks in the concrete, thus weakening the structure and subsequently shortening the lifespan of structures and buildings.

For pros of TMT bars over HYSD and mild steel you can refer to other answers and elsewhere but mainly TMT bars are superior than HYSD because of lesser residual stresses, more corrosion resistance due to hard surface and more ductility jysd similar strength grade.

What is the re bar? On the flipside of the coin, TOR bars are general purpose steel bars used in buildings, roads, and bridges as they surpass the minimum strength requirements. Due to the reduced amount of surface defects in TMT bars as compared to HYSD steel, they are comparatively much less susceptible to the harmful effects of oxidation like corrosion.

As the scale of structures began to touch the sky, both literally and metaphorically, problems associated with HYSD bars gave barss to TMT bars.

Related Questions What is the density of mild steel bar? These are manufactured by a quenching and tempering process which allows the hyss surface to cool much faster than inner core and hence making a temperature gradient from bar axis to periphery.


Please make sure that your answer is written in the same language as the question. By Osman Guni at Jul More Questions Like This. Compared to mild steel, cast iron has: The quality of any construction would depend on the rebars used, therefore the TMT bar manufacturer is selected bwrs their track record of quality.

Next Post Previous Post. TMT bars can be used in various types of construction works due to amazing flexibility and ductility which HYSD bars cannot provide. To correct these, HYSD or High yielding strength deformed bars were introduced for reinforcing heavy structure scale construction. So the difference lies in the exact process of making these two types of bars and not just in their names. June 18, No Comments.

To find out more, including how to control cookies, see here: This site uses cookies. Irrelevant to Specialties or not an answer. The TMT steel inside the concrete does not react with the moisture in the surroundings.

What Is the Difference Between TMT, HYSD, and TOR Steel Bars?

Suivie Upvote Report Question Commentaires bras. You are commenting using your Twitter account. Also, due to the superiority in the strength of TMT bars and also because of its higher corrosive resistance, TMT bars are better suited for use in large concrete structures and concrete structures built on the coastlines where high humidity is a major issue.

What is the difference between mild steel and hysd bars? Mild Steel bars were earlier used for small scale construction due to low yielding strength but later High yielding strength deformed bars were invented for reinforcing heavy structure scale construction. Which of the following material has maximum ductility?

Cast iron has good compressive strength but relatively poor tensile strength. You are commenting using your WordPress.


10 reasons you should pick TMT bars and not HYSD bars

TMT bars do not require explicit hardening as the hardening process is conveniently achieved by the water quenching process, thus reducing the energy and expenditure required for physically deforming the steel bars, and hence increasing their affordability.

This results in harder martensitic outer surface while the inner core cools slowly resulting in ductile inner core. TMT bars provide a longer life to the structures where they are used.

Now there is a catch! You are commenting using your WordPress. Mild steelalso called plain-carbon steel, is the most common form of steel Email required Address never made public. What is the re bar? You are commenting using your Twitter account.

Since there are no twisting or deformation processes employed in this method, TMT bars have no surface cracks or other defects as well. These are made of different grades and types.

What is the difference between mild steel and HYSD bars? – Spécialités

They are manufactured by passing hot rolled steel billets through water, which hardens the surface and increases its tensile strength while the inner core stays at a comparatively warmer temperature and hence, the core becomes more ductile. Fill in your details below or click an icon to log in: But how hyad Civil Engineers use these two terms matters the most, at least to me.

For More Details Plz Visit at: TMT Bars are better because: Mild steel is a carbon steel typically with a maximum of0. Make sure you insist on the highest quality TMT bars for your construction project.