Best Quality TMT Bar in India | Top TMT in West Bengal | Triam TMT

A+ All The Way
Triam A+ Fe 550D is no ordinary TMT rebar. The finest manufacturing process, quality checks at every stage, and a scientifically time-tested rib pattern that leads to better bonding and tolerance distribution, making Triam A+ Fe 550D the ultimate star among rebars.
  Product Specifications
Every time you hold an ISI certified Triam A+ Fe 550D new-age construction rebar in your hand, you feel the unmistaken presence of A+ quality in every square inch of metal.
  • TMT BARS / De-Formed Bars (Grade 550D).
  • Close Spiral Ribs.
  • CRS Grade TMT Bar.
Give your home the Triam A+ Fe 550D promise of A+ Strength, A+ Flexibility and A+ Grip, and make it last beyond a lifetime.
View Specifications

A+ Physical Properties

Triam A+ Fe 550D new-age construction rebars achieve a unique combination of strength and ductility through the superlative manufacturing process. Due to proper quenching, self-tampering, atmospheric cooling, and controlled carbon equivalent percentages, Triam A+ Fe 550D has increased exibility and strength. The higher ductility of Triam A+ Fe 550D facilitates the distribution of load in well-designed statically non-determinant structures. It facilitates the distribution of load and provides the best solution for structures prone to earthquakes owing to its high dissipation of energy.

Triam A+ Fe 550D further conforms to all parameters of IS:1786:2008 as well as Para 5.3 of IS:13920:2016 for all seismic zones. In the case of yield strength for Triam A+ Fe 550D, the standard specification stipulates a minimum of 550 N/mm². For the same product, the minimum value of elongation according to IS:1786:2008 is 14.5 % but we provide a value of 17%. Undoubtedly the superior indices of strength and ductility are a guarantee of higher levels of safety for ages. TS/YS ratio and total elongation percentage are important properties in rebars that reect the ability to handle the pressure of earthquakes.

A+ Chemical Properties

Triam A+ Fe 550D new-age rebars conform to Fe 550D, IS:1786:2008 specification. Their carbon levels are lower than the specifications, which result in its excellent ductility, high bending capability, better corrosion resistance and a superior welding strength.

  Application Areas
Consistent superior strength and high ductility are key attributes of Triam A+ Fe 550D new age rebars. These factors go much higher than the prescribed norms of IS:1786. Controlled chemical composition, by virtue of our own in-house rolled billets ensure low Carbon and high Manganese content, helping the rebars retain their optimum strength even at temperatures as high as 6000 Celsius. Additionally, controlled Sulphur and Phosphorus levels in the rebar make it corrosion resistant. Triam A+ Fe 550D can widely be used in construction of office buildings, residential complexes, warehouses, schools, dams, power plants and iconic super-structures.

  Advantages at a Glance

When you buy Triam A+ Fe 550D new-age rebars you can be assured that you have ticked all the right boxes when it comes to A+ quality.
PRODUCT TRUTHS BENEFITS
100% tested captive billets Resulting in 100% controlled chemical composition of the billet in the sequence to produce TMT.
Anti-corrosion properties Controlled chemical composition of S% & P% leads to better corrosion control.
Better flexibility Higher elongation percentage compared to other products lend advanced safeguarding properties against earthquakes and other natural calamities.
Superior strength Minimum strength of 600N/mm2 ensuring maximum support to structures, making it superior to other TMT bars.
Greater AR (Area of Rib) value Resulting in a good bonding between steel and concrete.
Easy bending and re-bending Resulting in enhanced productivity of the masons.
Fire resistance Controlled chemical composition and advanced quenching processes help in instilling the TMT bars with resistance to extreme temperatures of 6000C – 6500C.
Earthquake resistance The optimal combination of strength and exibility makes Triam A+ exhibit superlative earthquake resistance.

  Dimensional Tolerance

Triam A+ Fe 550D is manufactured keeping it within the standard range of sectional weight with negative tolerance according to IS:1786:2008. This ensures higher meterage per unit weight for Triam A+ Fe 550D as compared to ordinary rebars.

  Seismic Resistance

Several studies were conducted on concrete beam, column and joints reinforced with Triam A+ Fe 550D to evaluate its performance under repeated reversed loading with large deformations as would be encountered during an earthquake. The energy dissipation was found to be almost same for each cycle, indicating uniformly maintained ductility. The tests revealed superior seismic resistance properties for Triam A+ Fe 550D.

  Corrosion Resistance

Triam A+ Fe 550D is produced using Thermex Technology from HSE, Germany. Therefore, there are no torsional residual stresses in the rebar, which results in superior corrosion-resistant characteristics compared to traditional cold twisted bars. On account of its composite and uniform microstructure, Triam A+ Fe 550D has comparatively better corrosion-resistant properties compared to other TMT bars, while being embedded in concrete.

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Size (MM) Specified wt. (kg/m) Allowable Tolerance %
8 0.395 ± 7
10 0.617 ± 7
12 0.888 ± 5
16 1.578 ± 5
20 2.470 ± 3
25 3.850 ± 3
28 4.830 ± 3
32 6.310 ± 3
36 7.990 ± 3
40 9.860 ± 3
  Physical Properties
Physical Properties IS: 1786:2008 Fe 550D Triam A+ Fe 550D
0.2% Proof Stress : N/mm2 (Min) 550 550+
Tensile Strength : N/mm2 (Min) 600 600+
Elongation (%) 14.5 17+
Elongation of Max. Force (%) 5 7+
TS / YS Ratio 1.08 1.15
Bend 4D-5D 3D-4D
Rebend 6D-7D 5D-6D

 

  Chemical Properties

Chemical Properties IS: 1786:2008 Fe 550D Triam A+ Fe 550D
Carbon (%) Max 0.25 0.20
Sulphur (%) Max 0.040 0.040
Phosphorous (%) Max 0.040 0.040
Sulphur & Phosphorous (%) Max 0.075 0.075
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