Kothari TMT

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Fe 500D

'D' for Ductility

Low levels of Sulphur and Phosphorus impurities afford extra ductility and better ability to withstand the tremendous shock loads produced during earthquakes. Kothari Fe500D bars are trusted by leading industrial houses.

Fe 550D

'D' for Ductility

Higher Strength Fe 550D KOTHARI TMT bars are known for their exceptional strength and high ductility, making them suitable for all types of construction. Whether for residential and commercial projects, large-scale infrastructure, or structures in earthquake-prone areas, their high elongation property ensures both durability and flexibility.

CRS

(Corrosion Resistant Steel)

Sea water, acidity in the air or salinity in the ground water causes corrosion weakening RCC structures. Kothari CRS with corrosion resistant elements Copper(Cu) and Chromium(Cr) present uniformly from the core to the surface, fights corrosion, maintains structural strength over time prolonging the life of RCC structures.

Special Length

Cut to customized length tmt bars can be pre-ordered. Our precision cutting system cuts the bars on the fly enabling lowest wastage and maximixed savings for the customer. Bridges, long span floors, wind-mills and many other projects prefer special length tmt bars from Kothari for unmatched precision, ease of availability and small ticket size orders.

Chemical & Mechanical Properties

All products are manufactured according to ISI standard IS code IS 1786. ISI Specification is given below. Test certificates will be provided for every batch. Our ISI License number for TMT is CM / L-6607573
REBAR GRADE (%) Kothari Fe500D Typical Values Kothari Fe550D Typical Values Kothari CRS Typical Values
Carbon (Max) 0.25 0.20 0.25
Silicon 0.15-0.25 0.25 0.20-0.30
Manganese 0.65 - 0.75 0.65 - 0.75 0.65 - 0.75
Sulphur (MAX) 0.040 0.035 0.040
Phosphorus (MAX) 0.040 0.035 0.040
Sulphur + Phosphorus (MAX) 0.075 0.070 0.075
Carbon Equivalent (CE) MAX 0.31-0.36 0.42 0.53
Copper 0.18 -0.25
Chromium 0.35 - 0.45
Yield Stress (N/mm2) MIN 525 580 525
Elongation (MIN) 18 18.0 16
Ultimate Tensile Strength (N/mm2) MIN 575 680 600
UTS/YS Ratio 1.15 1.15 1.15

Suitable for using threaded stablecouplers

Kothari TMT bars can withstand high pressure cold forging process and can be forged uniformly to the required length. Our TMT bars can withstand the threading process (both taper and parallel) without generating metal shavings, which may cause harm while joining tow rods with coupler.

Corrosion Resistant

Kothari rebars is produced by TMT technology and not by cold twisting. Therefore, there is no torsional residual stress in the bar, which result in superior corrosion resistant characteristics compared to traditional cold twisted bars. On account of its composite and uniform microstructures, Kothari TMT has comparatively better corrosion resistant properties than other TMT bars, while being embedded inside concrete.

Earthquake Resistant

The buckling effect will occur while applying load to the structure even after deformation, thus become unstable. Such impact load occurs during earthquake, causing the structure to collapse. Our TMT Bars can withstand the buckling effect that occurs due to sudden sideways deflection of structure member.

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