Flagship Product — Reinforcement

TMT Bars

High-strength thermo-mechanically treated bars for superior structural integrity and earthquake resistance. Manufactured using advanced Thermex technology for the perfect combination of strength and ductility.

Grade Fe500D / Fe550D

Size 8mm – 32mm

Standard IS 1786:2008

Length 12 Meters

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Why GR Steels TMT

Built To Withstand Anything

Every GR Steels bar is engineered to deliver unmatched performance across critical construction parameters.

Earthquake Resistance

Superior ductility and high elongation ensure structures withstand seismic forces with ease.

Fire Resistance

Withstands temperatures up to 600°C without significant loss of structural strength.

Superior Weldability

Low carbon equivalent ensures easy welding without compromising joint integrity.

Corrosion Resistance

Thermo-mechanical treatment creates a protective oxide layer against rust and corrosion.

Bonding Strength

Precision rib pattern ensures maximum bond with concrete for stronger reinforcement.

Cost Effectiveness

Higher strength-to-weight ratio means 15–20% steel savings without compromising safety.

Technical Data

Technical Specifications

Element	Fe500D (% Max)	Fe550D (% Max)
Carbon (C)	0.25	0.25
Sulphur (S)	0.040	0.040
Phosphorus (P)	0.040	0.040
S + P	0.075	0.075
Carbon Equivalent	0.42	0.44

Property	Fe500D	Fe550D
Yield Stress (Min)	500 N/mm²	550 N/mm²
UTS / YS Ratio (Min)	1.08	1.06
Elongation (% Min)	16%	14.5%
Total Elongation at Max Force	5%	5%
Bend Test	3d — No crack	4d — No crack
Re-bend Test	7d — No crack	7d — No crack

Diameter (mm)	Weight (kg/m)	Standard Length
8mm	0.395	12 meters
10mm	0.617	12 meters
12mm	0.888	12 meters
16mm	1.580	12 meters
20mm	2.469	12 meters
25mm	3.858	12 meters
32mm	6.321	12 meters

IS 1786:2008

BIS Certified

ISI Mark

Where It's Used

Key Applications

Residential

Individual houses, apartments, and multi-story residential complexes with superior earthquake resistance.

Commercial

Shopping malls, office towers, hotels, and commercial buildings requiring high structural strength.

Infrastructure

Bridges, flyovers, dams, tunnels, and highways demanding long-term durability and load-bearing capacity.

Industrial

Factories, warehouses, power plants, and heavy industrial structures with demanding performance criteria.

TMT Bars