Low-Carbon Steel Rebar

Premium Fe 500 and Fe 550 grades for all your construction needs and structural integrity.

Sustainable Steel Rebar

Greater Strength and Guaranteed Enhanced Ductility

Code: HSN 72142090, NIC 24105

Deformed Carbon-Steel Bars for Concrete Reinforcement

Indian Standards: IS 1786:2008 (Grade Fe 550) = American Standards: ASTM A615/A615M (Grade 80) = Euro Standards DIN 488 (BST 500 M) and = British Standards: BS4449:1997 (GR 460 B)

Low Carbon Thermo-Mechanically Treated (TMT) Deformed Steel Rebars

AISCO 500 & AISCO 550 low-carbon TMT deformed rebars are designed to deliver high strength, superior ductility, and seismic safety, making them suitable for critical infrastructure and earthquake-resistant construction.

Standards Compliance

Indian Standards
- IS 1786:2008 — High strength deformed steel bars and wires for concrete reinforcement.
- IS 13920:2016 — Ductile detailing of reinforced concrete structures subjected to seismic forces.
International Standards
- ASTM A615/A615M (Grade 80) — American Standard for deformed and plain carbon-steel bars for concrete reinforcement.
- DIN 488 (BST 500 M) — German/Euro standard for ribbed reinforcing steel with controlled ductility.
- BS 4449:1997 (Grade 460 B) — British Standard for carbon steel bars with guaranteed bendability and ductility.

Key Metallurgical Features

Low Carbon Content (<0.25%)
- Ensures excellent weldability without preheating.
- Reduces brittleness and improves toughness.
Thermo-Mechanical Treatment (TMT Process)
- Quenching and self-tempering impart a strong martensitic rim with a ductile ferrite–pearlite core.
- Guarantees superior strength-to-ductility balance.
Deformed Surface (Ribs & Lugs)
- Ribs, ridges, and lugs rolled into the surface.
- Provides superior mechanical interlock with concrete.

Mechanical Properties

Yield Strength: 500–600 MPa (Fe 500/Fe 550 grades).
Ultimate Tensile Strength: Typically, ≥ 1.08 × Yield Strength.
Uniform Elongation:
- Complies with IS 13920:2016 (min. 14.5%).
- High elongation values (14–18%) → allows better energy absorption during seismic activity.
- Enhanced ductility values as per Euro & British norms.
Guaranteed Enhanced Ductility (UED):
- Ensures superior seismic energy absorption.
- Prevents sudden brittle failure.

Advantages

Seismic Resistance → High ductility, suitable for earthquake-prone regions.
Corrosion Resistance → Low carbon with refined microstructure.
Weldability → Safe welding without preheating.
Fatigue Resistance → Suitable for dynamic and cyclic loading.
Global Acceptance → Complies with IS, ASTM, DIN, and BS standards.

Applications

High-rise buildings and bridges.
Infrastructure in seismic and cyclone-prone zones.
Structures requiring high fatigue resistance (industrial, marine, and transport projects).

AISCO 500 & AISCO 550 low carbon TMT deformed rebars are the most preferred modern reinforcement material, offering a combination of strength, ductility, and durability, making them ideal for earthquake-resistant and long-lasting structures.