TMT Bars
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Uses: Construction
Grades: Gr 40, Gr 60, Gr 100
Sizes (in mm): 8, 10, 12, 16, 18, 20, 22, 25, 28, 32, 36, 40
Standards: As per ASTM A 615/615M
Length: Standard 12m or 9-12m on mutual agreement
Packing: Straight Bars
Make: Vizag TMT (RINL) / Simhadri TMT
The selection criteria is the major aspect customers keep in mind while buying TMT bars. It consists of physical attributes, promotion, and affordable pricing. The major thing that influences consumer’s buying behaviour towards TMT bars is the quality and strength. This is where Vizag TMT bars are different and have an edge over others. Vizag TMT Re-Bars Fe500D has certain advantages as it possesses a rare combination of ductility with high strength modules.
When it comes to tensile strength ratio, it will be greater than 1:12. In terms of normal bars, the increase of yield strength of the bars is done by the loss of percent elongation. However, in the case of Vizag TMT bars, this loss is negligible and the percent elongation values are way higher than normally specified in various International Standards. In the case of Fe500D grade rebars, the UTS/YS ratio values are maintained at more than 1:15 ratio.
Product Specifications
Resistance To Ageing
Vizag TMT bars are passed through a specific test that indicates no significant change of strength can occur that could affect the usefulness of these bars.
Superior Corrosion Resistance
Absence of Eutectoid Carbides and pearlite colonies in TMT bars is the reason for better corrosion resistance properties.
Excellent Bendability and Workability
Vizag TMT bars provide tougher outer skin that results in excellent bendability. This reflects higher resistance to low-temperature brittle fracture, which ultimately allows these bars to bend.
Chemical Composition
Vizag Steel has low carbon content made from fully killed steel. Requires less energy for bending as well as re-bending and can be butt welded or lap welded. These bars are composed of virgin steel in Blast Furnace with basic oxygen Furnace through continuous casting route. Rolling is done in state of the art Rolling Mills with the latest technologies.
Testing
A special kind of test called Fatigue Test is carried out on Vizag TMT bars by subjecting to alternate tensile stressing. This particular test is also carried out on bent and angled bars encased in concrete. The results are then obtained by using constant amplitude loading of 200 MPa with maximum stress equal to 0.7x yield strength.