What is the difference between HYSD Bars & TMT bars?
TMT bars have preferred corrosion resistant properties over HYSD bars because of rapid quenching and tempering in the manufacturing process. TMT bars have a stronger external layer when compared with HYSD due to ductile microstructure at the center and hard crystalline outside surface of TMT steel.
Why HYSD bars are used?
HYSD Bars (High Yield Strength Bars) The yield strength of these bars is high. These types of bars are used for lightweight structures as well as heavy loaded structures. So, the durability of the structure increases. The carbon content in HYSD bars is more so the strength is more but the ductility is less.
What is difference between mild steel and HYSD steel?
Though mild steel contains very little carbon, it is ductile and weldable but having low strength. Also, mild steel is highly prone to corrosion. High yield strength deformed bars (HYSD) are manufactured under heat treatment followed by either heat rolled or cold twisted for shaping.
What is the grade of mild steel and HYSD bars?
Mild steel is a plain low carbon steel without any alloying elements. It is very ductile & is used as a structural steel for ordinary applications in civil construction. HYSD is a special quality steel with much higher tensile strength than the mild steel (30 to 40\% stronger than mild steel) .
What is the yield strength of HYSD and CTD bars?
The most commonly used HYSD bars for RCC work are the CTD bars. As per Table Number 22 of IS 456:2000, the minimum characteristic yield strength for hot rolled high yield strength deformed bar is 415 N/mm2.
Which bars are preferred over mild steel bars?
HYSD bars are preferred as reinforcement in R.C.C. over plain mild steel bars, due to following reasons :
- Higher Strength : HYSD bars have yield strength, higher than that of plain mild steel bars.
- Better Bond : The HYSD bars have better bond with concrete due to corrugations or ribs on the surface of the bars.
Why HYSD is used in construction industry?
Weld-ability When compared with TMT bars, HYSD bars increase the consumption of steel by 8\% to 11\% when used in the same construction. TMT bars come with a stronger external layer, something which is missing in HYSD due to ductile nature of the core and hard crystalline surface of TMT steel.
How reinforcement is provided in slabs?
In one way slab main reinforcement is parallel to shorter direction and the reinforcement parallel to longer direction is called distribution steel. In two way slab main reinforcement is provided along both direction. Slabs could be simply supported, continuous or cantilever.
Why TMT bars are used?
More strength and ductility – the high strength of the bars make them an ideal material to be used with concrete for making structures more robust. The ductility of the TMT bars makes them easier to work with, and pre-welded meshes can be made off-site reducing the overall construction time.
What is difference between TMT and TOR steel?
TOR steel corrodes in the concrete due to its high concentration of chloride ions. On the other hand, TMT bars due to their thermo-mechanical treatment are very highly rust and corrosion resistant which makes them ideally suitable for construction structures in humid and coastal areas.
Are TMT bars mild steel?
We have received your response. It will be posted on the site, once our experts review it. What is the best price of Mild Steel TMT Bars?…Questions & Answers on Mild Steel TMT Bars.
| Material | Min Price | Max Price |
|---|---|---|
| Mild Steel | Rs 34/Kg | Rs 60/Kg |
| Mild Steel | Rs 34000/Ton | Rs 50000/Ton |
What is the difference between TMT and TOR steel?
What is hyhysd bar?
HYSD Bar stands for High Yielding Strength Deformed Bar. It has more yield (tensile) strength than the other Mild steel bars. It is corrosion resistant and more weldable.
What is the meaning of hysd?
HYSD means HIGH YIELD STRENGTH DEFORMED BARS. These bars are usually used in construction of bridges, buildings, etc.. These bars are very good in Tensile Strength. Grades of HYSD bars are Fe415 and Fe500. HYSD stands for High Yielding Strength Deformed bars. Thesebars have more yield strength than Mild Steel.
What is the difference between hysd and mild steel bars?
HYSD bars have yield strength, higher than that of plain mild steel bars. The HYSD bars have a better bond with concrete due to corrugations or ribs on the surface of the bars.
How to draw the yield stress of hysd bars?
Draw a line parallel to the initial stress-strain curve, corresponding to a strain value of 0.002 (0.2 percent). The point where this line cuts the stress-strain curve is taken as the yield stress or 0.2 percent proof stress. HYSD bars are preferred as reinforcement in R.C.C. over plain mild steel bars, due to following reasons.