Conforming to IS 1786:2008 Grade Fe 550D, the Birla TMT TMT Bar Birla Fe 550D TMT Bar - 16 mm is a thermomechanically treated reinforcing bar in 16 mm diameter, supplied in standard 12 m lengths. The QST process imparts a hard tempered outer zone and a ductile core, achieving 550 MPa yield, 600 MPa UTS, and 14.5% elongation for reliable use in seismic-resistant ductile frame and critical structural concrete applications. The superior weldability, corrosion resistance, and bond characteristics of this TMT bar make it the preferred reinforcing steel for structural concrete across residential, commercial, and infrastructure applications.

• Certified Fe 550D conforming to IS 1786:2008 ductile high-strength rebar standard
• QST microstructure delivering 550 MPa yield with 14.5% elongation at high strength
• UTS 600 MPa meeting the higher tensile requirement of the D-suffix 550 grade
• Higher elongation than Fe 550 enabling ductile plastic hinge zone performance
• Enhanced rib geometry for superior concrete bond and mechanical interlock
• Low sulphur and phosphorus content for cold-bending and field welding performance
• Preferred for IS 13920 ductile detailing in seismic zone III, IV, and V buildings
• Standard 12 m mill length for project scheduling, logistics, and site fixing
• Reduces bar quantities in seismic-critical members while maintaining ductility
• Traceable quality documentation supporting structural certification and audit

• Ductile high-strength columns in seismic zone commercial towers
• Beam-column joints in high-strength IS 13920 seismic frame structures
• Seismic-resistant core wall systems in 30+ storey high-rise buildings
• Seismically designed bridge and viaduct pier column reinforcement
• High-strength seismic zone industrial plant and containment structures
• Performance-based seismic design primary members in critical buildings
• Deep foundation pile cages in seismic zone high-rise developments
• Coastal and offshore structure reinforcement in high seismic activity areas