Prime Gold Fe 550D TMT Steel

Prime Gold Fe 550D TMT Rebars are premium, high-strength Thermo-Mechanically Treated (TMT) steel reinforcement bars engineered for heavy-duty, modern structural construction. The "Fe 550" denotes a high minimum yield strength, while the "D" designation stands for Superior Ductility.

Manufactured using advanced quenching and self-tempering technologies, Prime Gold Fe 550D features a tough outer martensitic rim for extreme load-bearing strength and a soft, ductile inner ferritic-pearlitic core. This metallurgical balance provides the high flexibility and energy absorption required to resist severe seismic activity, dynamic wind shear, and structural deflection. It conforms strictly to the Bureau of Indian Standards IS 1786:2008 Grade Fe 550D.

Key Features & Benefits

• Superior Ductility & High Elongation: Delivers a minimum elongation of , allowing the rebar to bend and deform without snapping during high-magnitude earthquakes and structural settling.
• Seismic & Dynamic Load Resistance: High energy dissipation capacity makes it ideal for construction in high-seismic zones (Zones III, IV, and V).
• Enhanced Corrosion Resistance (CRS Properties): Controlled low levels of carbon and precise micro-alloying protect the steel against rust, coastal salinity, and moisture penetration inside concrete.
• High Thermal & Fire Resistance: Retains structural yield strength even at high temperatures, providing vital escape and containment time during fire hazards.
• Superior Rib Pattern & Concrete Grip: Features high-precision CNC-notched transverse ribs that create a tight mechanical interlock with concrete, preventing slippage and hairline cracking under tension.
• Low Carbon Equivalent & Easy Weldability: Ultra-low carbon composition ensures seamless, crack-free welding on site without the need for pre-heating or post-weld thermal treatment.
• Material Cost Savings: The high yield strength of Fe 550D allows engineers to reduce total steel consumption compared to standard Fe 415 grade rebars.

Primary Applications

• High-Rise Residential & Commercial Towers: Essential for heavily loaded foundation rafts, columns, shear walls, and transfer slabs in multi-story towers.
• Critical Civil Infrastructure: Bridges, flyovers, metro rail corridors, highway overpasses, and underground tunnels.
• Industrial Structures: Heavy manufacturing units, power plants, warehouses, crane gantry foundations, and chemical facilities.
• Specialized Water Retaining Structures: Dams, reservoirs, marine retaining walls, sewage treatment plants, and large underground sumps.

Standard Diameter Sizes & Availability

Prime Gold Fe 550D TMT bars are supplied in standard 12-meter lengths across a full range of structural diameters: