Knowing Difference of HYSD Bar and TMT Bar
Overview of HYSD Bar and TMT Bar
TMT Bar, HYSD Bar are some famous types of steel Bars in the modern steel industry. The difference of HYSD Bar and TMT Bar is based on tensile strength, ductility, and environmental resistance. Understanding the Difference between TMT and HYSD bars is vital to ensure the structural integrity and longevity of a construction. In the present article, we would shed light on two distinct factors, as outlined below.
What is the difference between HYSD and TMT bars?
What are the pros of TMT bars over HYSD ?
What is HYSD Bar and TMT Bar
To understand the difference between the HYSD, TMT Bars, it is important to understand their uniqueness. Lets, understand what are they actually and how can we define them individually.
HYSD Bars (High Yield Strength Deformed Bars)
The main difference between HYSD Bars and TMT Bars is their surface defect. However, TMT Bars having fewer defects, reducing corrosion compared to HYSD Bars. Still, the discussion is relevent to understand which one is the best. HYSD Bar is surface deformed steel bar to enhance bonding capacity with concrete. The mechanical properties of HYSD steel bars indicates higher Yield Strength as they are produced through cold twisting method. This cold twisting process creates internal inconsistency in this type of steel bar. As a result, higher internal stresses is introduced in HYSD type Steel bar. Increased internal stress makes HYSD Steel more prone to corrosion. The yield strength of HYSD bar is varied between 415 and 500 MPa, in line with the relevant Indian Standard of IS 1786:2008. Apart from that, HYSD Bar has an elongation property of 10-12%. HYSD is a old technology, which now becomes almost obsolete, as it has a very high residual stress in it. Presently, the HYSD Steel bar has become almost irrelevant in the constructions industry.
What is TMT Bar (Thermo-Mechanically Treated Bars)
TMT Bar is an unique form of steel and this technology comes into action in 1979. This types of steel is manufactured through several steps of quench and tempering process. These periodic quenching and tempering, make the steel to have hard outer surface and a softer core. TMT bars have higher yield strength varies from 500 to 600 MPa with an elongation of 14-16%. The mentioned mechanical and chemical features of TMT follows the Indian Standard of IS 1786:2008. This feature makes TMT Bar ideal option for the high-rise buildings and bridges.
Difference of HYSD and TMT Bars
There is a significant difference of HYSD bars and TMT bars due to variation in their manufacturing process along with chemical and physical properties. HYSD Bars are made through cold twisting that increases the yield strength of HYSD to 415-500 MPa. As no heat is applied while twisting, the steel experience an internal stresses. It makes HYSD steel more prone to corrosion. In the other hand, TMT Bars are very modern form of steel and it is produced using a quenching and tempering process. This manufacturing strategy gives a superior strength and flexibility to the TMT Bars. Due to no internal stress is introduced, it becomes an ideal option to be used for construction in earthquake-prone areas. They also have excellent corrosion resistance due to their unique manufacturing process. The main difference difference of HYSD bars and TMT bars is Surface defect. The TMT steel bar has less surface defect compared to HYSD, which reduced the corrosion in the TMT Compared to HYSD.
Pros of TMT Bars Over HYSD Bar
The difference of HYSD Bar and TMT Bar is lied in variation of their manufacturing process along with chemical and physical properties. HYSD Bars are made through cold twisting that increases the yield strength of HYSD to 415-500 MPa. As no heat is applied while twisting, the steel experience an internal stresses. It makes HYSD steel more prone to corrosion. In the other hand, TMT Bars are very modern form of steel and it is produced using a quenching and tempering process. This manufacturing strategy gives a superior strength and flexibility to the TMT Bars. Due to no internal stress is introduced, it becomes an ideal option to be used for construction in earthquake-prone areas. They also have excellent corrosion resistance due to their unique manufacturing process. Surface defect in the TMT steel is less, the corrosion is also less in the TMT, compared to HYSD.
Distinct Feature of TMT Bars
The benefit of TMT over HYSD is a clear fact with real scenarios. We, Shree Ji Steel Corporation is offering wide range of TMT Bars from different sourcing locations in India. The Difference of HYSD Bar and TMT Bar is that, later one is highly ductile with easy welding and bending property. Thus, it suitable for structural and fabrication purposes. Our Durgapur TMT bar are good (https://shreejisteelcorp.com/durgapur-tmt-bars/) to be used construction and industrial applications. These steels are also magnetically active to be useful in motors and transformers. TMT bar has wide popularity to be used in the Industrial building projects and private residential, commercial residential constructio out. Our different loading locations (dispatch) of Chattisgarh, Punjab and Maharashtra has a wide range of diverse portfolio of steel brands in our portfolio. Our sales Executive is always open to make a communication with you. Kindly reach out to them at +91-7044459444.
Conclusion
The aforestated discussion on the The Difference of HYSD Bar and TMT Bar shows that TMT has been an excellent innovation n the steel industry. Less residual stress and less perobaility of getting affected with corrosion, make it promising choice among the customer. We, at Shree Ji Steell, we have a wider portfolio of TMT bars, comprising with more than 25 brands to meet the increasing demand of our customers. TMT can be used in in heavy-load applications. Secondly, theTMT bars are less prone to corrosion if not properly protected or coated. If you need any product for government project, with approved materials only, we have a strong supply chain to help you in this.
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