Shyam TMT Re-bars Fe 415 D is the ductile (D) variant of the Fe 415 grade, with higher elongation, tighter chemistry and lower bend/rebend mandrel ratios than Fe 415 in the brochure's comparison with IS 1786 Fe 415 D. It is made by the Thermex process from in-house billets and is available in 8-40 mm.

Key features

• Superior physical strength and high ductility, with limits much higher than specified in IS 1786
• Controlled chemical composition from in-house M.S. steel billets (low carbon, high manganese)
• High bond strength: more prominent ribs with AR values up to 100-150 % higher than traditional CTD bars or other TMT re-bars
• Superior bendability from the Thermex process (tough outer surface, soft core)
• Excellent weldability
• no pre- or post-weld treatment required
• Cost advantage: section weights very close to BIS nominal values, giving higher meterage per unit weight
• Supports seismic design through its combination of strength, ductility and stress ratio
• No loss of strength at temperatures as high as 600 degC
• Free from internal stress, giving superior corrosion resistance compared with cold-twisted bars and other TMT re-bars

Applications

• Office and residential complexes
• Warehouses
• Schools
• Bridges
• Dams
• Power plants

Specifications

Grade: Fe 415 D | Diameter Range: 8 mm - 40 mm | 0.2% Proof Stress (Min): 470 N/mm2 | Ultimate Tensile Strength (Min): 580 N/mm2 | Total Elongation (Min): 6 % | Elongation (Min): 22 % | Bend Test: 2D | Rebend Test: 3D to 4D | Carbon (Max): 0.220 % | Sulphur & Phosphorus (Max): 0.040 % | Sulphur + Phosphorus (Max): 0.080 % | Manganese (Max, as printed): 0.070 % | Carbon Equivalent (Max): 0.350 % | Nitrogen (Max, printed under 'ppm max'): 0.012 | IS 1786 Fe 415 D Reference Limits: 0.2% proof stress 415 N/mm2 min, UTS 500 N/mm2 min, total elongation 5 % min, elongation 18 % min, bend 2D to 3D, rebend 4D to 6D; C 0.250 % max, S&P 0.045 % max, S+P 0.085 % max, N 0.012 | Section Weights: As per IS 1786, applicable to all Shyam TMT grades

Standards: IS 1786 | BIS Certified