Birla TMT Fe 500D TMT Bar Birla Fe 500D TMT Bar - 25 mm is a thermo-mechanically treated high-strength reinforcing bar conforming to IS 1786:2008, with a 25 mm nominal diameter supplied in standard 12 m lengths. Manufactured using the quench-and-self-temper (QST) process, it achieves a minimum yield strength of 500 MPa, UTS of 565 MPa, and elongation of 16%, making it reliable for ductile frame construction and seismic-zone reinforced concrete structures. The hard martensitic outer rim and tough ferritic-pearlitic core give this bar its signature combination of strength, ductility, and superior bond performance in reinforced concrete.

• Thermomechanically treated to IS 1786:2008 Fe 500D with mill test certification
• Minimum yield strength 500 MPa and UTS 565 MPa for ductile structural design
• Enhanced 16% minimum elongation for superior ductility in seismic applications
• QST dual-zone microstructure specially controlled for ductile frame requirements
• Ribbed surface profile ensuring reliable mechanical bond with structural concrete
• Low carbon and low sulphur/phosphorus for improved ductility and weldability
• Suitable for cutting, bending, and welding using standard site equipment
• Standard 12 m lengths for efficient rebar scheduling and reduced site waste
• Preferred grade for earthquake-resistant reinforced concrete frame structures
• Compatible with standard mechanical coupler and lap splice connection systems

• Earthquake-resistant ductile frame columns and beam reinforcement
• Seismic zone III, IV, and V residential and commercial frame structures
• Critical joint zones in ductile RC moment-resisting frame buildings
• High-rise residential tower columns, shear walls, and core walls
• Hospital and critical facility structural frames in seismic zones
• Pre-cast seismic-resistant frame elements and structural components
• Pile reinforcement in seismic zone foundation systems
• Bridge structures in seismic-active regions requiring ductile design