SAIL TMT EQR Fe 550D is the higher-strength EQR grade, with 550 MPa minimum yield strength and 600 MPa minimum tensile strength. It carries the same ductility, weldability and fatigue qualities as the EQR range and is used for RCC in buildings, bridges and other concrete structures.

Key features

• High ductility (UTS/YS ratio)
• Higher elongation and uniform elongation
• Narrow range of yield strength
• Excellent bendability
• Good weldability
• High fatigue resistance on dynamic loading

Applications

• Reinforced concrete construction (RCC) in buildings, bridges and other concrete structures
• Particularly suitable for earthquake-prone zones

Specifications

Grade: Fe 550D EQR | Yield Strength (Min): 550 MPa | Ultimate Tensile Strength (Min): 600 MPa | UTS/YS Ratio (Min): 1.08 | Elongation (Min): 14.5 % | Uniform Elongation (Min, with mutual consent): 5.0 % | Carbon (Max): 0.25 % | Sulphur (Max): 0.040 % | Phosphorus (Max): 0.040 % | Sulphur + Phosphorus (Max): 0.075 % | Micro-alloying (Nb, V, Ti, B): 0.3 % max, singly or in combination | Nominal Diameter Range: 6 mm - 40 mm (rationalised sizes) | Bend and Re-bend Properties: As per IS 1786:2008 Amendment-3 | Tolerances (Length, Nominal Mass, Carbon Equivalent): As per IS 1786:2008 | Other Grades Available: BS 4449 Grade B500B, CS2 Grade 500B, S560 Grade B500B, ASTM A615 Grade 40 (TMT wire rods), ASTM A615 Grade 40 / Grade 60 (TMT bars) - if sufficient orders

Standards: IS 1786:2008 | IS 1786:2008 Amendment-3

Packing: Standard length 12 m (other lengths by mutual agreement); bundles strapped with wire: ISP 2.5-3.5 tonnes, DSP and BSP about 5.0 tonnes