NGA TMT Steel

Maximum Strength, Greatest Durability, Highest Saving

SPECIAL FEATURES OF NGA TMT STEEL

  • 100 % refined and quality iron ingot are manufactured.
  • The spectrometer is used for testing the quality and proper ratio of 18 elements.
  • TMT bar is harder on the outside and is softer on the inside which results in good welding.
  • When steel is compounded by cement, it ensures gain strength to the building.
  • TMT bar has a heating capacity up to 500° C.
  • Controls soil erosion and earthquake resistant.
  • Section Weight, RIB formation, Tensile stress are tested for proper proportional.
  • Bears  IS 1786, IS 2830.
  • We are an ISO 9001: 2008 Company.

NGA TMT PROCESS

TMT bars or Thermo-Mechanically Treated bars are high-strength reinforcement bars having a tough outer core and a soft inner core. The very first step of the manufacturing process involves passing the MS Billets through a rolling mill stand. Thereafter, these rolled steel rods are again passed through the water cooling system. While passing the rods through the water cooling system, the water pressure is optimised. The sudden quenching and drastic change in temperature toughen the outer layer of the steel bar, thus making it super tough and durable.

Due to this treatement the inner core remains soft giving the TMT bar great tensile strength and elongation point. This design is unique to the TMT bars and gives superior ductility to the bars. Also, this unique manufacturing technique and the absence of Cold stress make this bar corrosion-resistant and boost its weld ability.

The above treated rods are checked for quality by UTI Machine and by this process the quality is confirmed.

NGA TMT PROPERTIES

PROPERTIESIS 1786
Fe 500
NGA TMT
Fe 500
Yield Strength500 min550 min
Tensile Strength545 min610 min
Elongation - %12.0 min14.0 min
Bend - upto 20 mm4d3d
Rebend - upto 10 mm4d3d
Over 10mm6d5d

CHEMICAL COMPOSITION

PROPERTIESAs per IS 1786NGA TMT
Carbon (Max%)0.300.17 to 0.23
Sulphur (Max%)0.060.045
Phosphorous (Max%)0.060.045
Sulphur & Phosphorous (Max%)0.110.090

PHYSICAL

PROPERTIES

TESTING Fe 500
As per
IS 1786 Kg/Metre
Fe 500
Offered by
NGA Kg/Metre
0.2% Proof Stress500 N/mm² (minimum)550 N/mm² (minimum)
Tensile Strength545 N/mm² (minimum)610 N/mm² (minimum)
Elongation12.0 % (minimum)14 - 16.0 % (minimum)

NGA TMT COMPARISION TABLE

Bar SizeAs per IS 1786
Kg/Metre
Offered by NGA Kg/Metre
8mm0.367 - 0.4230.370 - 0.400
10mm0.574 - 0.6600.580 - 0.620
12mm0.844 - 0.9320.850 - 0.900
16mm1.501 - 1.6591.520 - 1.600
20mm2.396 - 2.5442.420 - 2.480