Fe 500D & Fe 550D Grade TMT Bars for Stronger Construction-APL Apollo SG Infra
What is APL Apollo SG Infra?
Fe 500D and Fe 550D is a premium range of D Grade steel bars, specifically engineered for high-load bearing and earthquake-resistant structures. These bars are available in Fe 550D steel & Fe 500D grades-ideal for modern infrastructure, commercial complexes, and seismic-prone zones.
With advanced rib patterns, consistent elongation, and lower impurity content, SG Infra bars meet both IS 1786:2008 and global construction standards. Whether you’re building high-rises, bridges, or residential structures, SG Infra ensures strength with safety
difference between 500d and 550d steel
| Property | Fe 500D | Fe 550D |
|---|---|---|
| Yield Strength (Min) | 500 N/mm² | 550 N/mm² |
| Ultimate Tensile Strength | ≥ 565 N/mm² | ≥ 585 N/mm² |
| Elongation | ≥ 16% | ≥ 14.5% |
| UTS/YS Ratio | > 1.10 | > 1.06 |
| Flexibility | High | Moderate-High |
| Ideal Use | RCC, seismic zones | Heavy load, bridges |
Fe 500D is more flexible, making it ideal for residential and seismic zones.
Fe 550D offers greater strength with reduced steel consumption, perfect for mega infrastructure projects.
Fe 500D & Fe 550D Steel Specification
Both grades under APL Apollo SG Infra are manufactured using thermo-mechanical treatment, which gives these bars:
- Higher strength without sacrificing ductility
- Excellent weldability with no loss of strength
- Superior fatigue resistance
- Rust and corrosion resistance with low carbon, phosphorus, and sulfur content
- Uniform elongation and stress handling
Fe 500D Meaning – Explained Simply
“Fe” stands for Iron, and 500D refers to:
• 500: Minimum yield strength (500 N/mm²)
• D: Higher ductility grade (greater elongation than standard Fe 500)
This makes Fe 500D TMT bars suitable for zones prone to earthquakes and thermal variations, where flexibility saves lives
Where Are SG Infra Steel Grades TMT Bars Used?
- Residential RCC structures (slabs, columns, beams)
- Bridges and flyovers
- Metro and tunnel projects
- Industrial warehouses and power plants
- Commercial complexes
- Coastal and high humidity zones
Why Choose APL Apollo Kinds of Steel Bars?
- Tested & Certified: Complies with IS 1786:2008
- Strong & Safe: Enhanced bond strength with concrete
- Eco-friendly: Low carbon footprint steelmaking
- Cost-efficient: Requires fewer bars for the same support
- Trusted Network: Available through SG Mart across India
Check the Current TMT Steel Price
Looking for the price of steel bars like Fe 500D steel price or Fe 550D TMT rate?
Contact our team for region-specific pricing and bulk quote support.
