550 D Bar
Where strength meets superior ductility. Shri Krushna's Fe 550 D - the premium choice for high-performance construction.
About 550 D Bar
Shree Krushna 550 D Bar is a premium quality TMT steel bar specially designed for modern construction needs. Manufactured with advanced technology and strict quality standards, these bars offer high strength, excellent flexibility, and long-lasting durability.
The 550 D Bar is ideal for structures that require strong reinforcement with better resistance to stress, bending, and heavy loads. Its superior bonding with concrete helps create safer and stronger buildings.
With excellent weldability and corrosion resistance, Shree Krushna 550 D Bars are trusted for residential, commercial, and infrastructure projects.
Engineered for Strength
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Used in
Commercial complexes
Ideal for malls, offices, and business buildings requiring high strength.
High-rise buildings
Ensures structural stability and load-bearing capacity for tall buildings.
Bridges and flyovers
Offers reliable support for heavy traffic and long-span structures.
Foundations and columns
Strengthens the core structure for long-term safety and durability.
Beams and slabs
Enhances concrete strength and prevents structural cracks.
Why Choose 550 D Bar
- High Tensile Strength
- Corrosion Resistance
- Superior Bendability
- Strong Concrete Bonding
Built for heavy load performance and structural safety.
Shree Krushna 550 D Bars are manufactured to handle high stress and pressure, making them ideal for columns, beams, foundations, and large construction projects where strength is critical.
Best Used In
- High-rise buildings
- Bridges
- Industrial structures
Product Specifications
01 Mechanical Properties of 550 D TMT Bar
Grade
Yield stress (n/sq.mm)
Tensile strength (n/sq.m)
Elongation%
Fe 415
>415
>485
>14.5%
Fe 500
>500
>545
>12%
Fe 550
>550
>585
>10%
SHREE TMT XTRA
>550
>640
>16%
02 Chemical Properties of 550 D TMT Bar
Grade
Carbon %
Sulphur %
Phosphorus %
Sulphur & phosphorus %
Manganese %
CE %
Fe 415
<0.30%
<0.060%
<0.060%
<0.11%
0.5% to 1.0%
<0.42%
Fe 500
<0.30%
<0.055%
<0.055%
<0.105%
0.5% to 1.0%
<0.42%
Fe 550
<0.30%
<0.055%
<0.050%
<0.10%
0.5% to 1.0%
<0.42%
SHREE TMT XTRA
<0.25%
<0.050%
<0.050%
<0.10%
0.5% to 1.0%
<0.40%
03 Saving in Weight and Cost of Construction by Shree Krushna TMT Bar
Grade
Yield Strength
Weight Required
Saving in Weight
TMT Fe 415
415 N/mm2
1,000 MT
-
TMT Fe 500
500 N/mm2
0.854 MT
14.6%
SHREE TMT XTRA Fe 550
550 N/mm2
0.809 MT
19.15%
Manufacturing Process
Melting & Refining
- Raw Material Selection: High-grade raw materials are carefully sourced to ensure superior TMT steel quality.
- Induction Furnace: Materials are melted in in-house induction furnaces, where molten metal is efficiently separated from slag.
- Purging & Refining: The molten steel is refined in a ladle furnace using purging and controlled chemical additions to remove impurities and achieve precise composition. Advanced spectrometer analysis ensures optimal weldability, strength, ductility, and elongation, meeting stringent industry standards
Continuous Casting
- Continuous casting is a critical stage in TMT bar manufacturing, where molten metal is solidified into predefined sections through a controlled and continuous process. Fresh molten metal is consistently fed into the mold to maintain uniform solidification.
- Our advanced continuous casting system enhances yield, productivity, and cost efficiency while ensuring consistent quality. Leveraging precision engineering and modern technology, it enables the seamless conversion of molten metal into accurately shaped, high-strength steel billets.
Secondary Cooling & Hot Charging
- After continuous casting, billets pass through a secondary cooling chamber where controlled water spraying ensures complete solidification, dimensional stability, and improved structural integrity.
- The solidified billets are then reheated in a furnace to achieve recrystallization, enhancing material properties and minimizing losses. This process preserves metallurgical integrity during rolling, resulting in superior-quality TMT bars. Our Next Gen 3X Ribbed Bars are engineered to deliver optimal steel and cement bonding, ensuring exceptional strength and performance.
Rolling Mill
- Recrystallized billets are conveyed to a state-of-the-art rolling mill for precision processing. Using internationally recognized roll pass design, the process enhances strength, elongation, and ensures uniform properties along the bar length.
- TMT bars produced from billets offer superior quality compared to ingot-based bars. Our in-house induction furnaces enable complete control over billet production, ensuring consistent quality from raw material to finished product.
Quenching & Self-tempering
- After exiting the finishing mill, rebars enter a water-cooling chamber for quenching using advanced German QST technology, producing high-strength, flexible ribbed TMT bars suitable for premium infrastructure.
- The process involves three stages:
- Rapid Quenching: Immediate surface hardening as bars leave the final mill stand.
- Self-Tempering: Residual core heat tempers the hardened surface layer.
- Air Cooling: Uniform cooling on a cooling bed to stabilize the microstructure.
- This controlled treatment ensures superior strength, ductility, bendability, weldability, and enhanced resistance to corrosion.
Quality Process Management
Step - 1
Raw Material
Step - 2
At Laddle, QA of Liquid Metal
Step - 3
Billet QA & QC
Step - 4
Finished Goods / Final QC Release
Step - 5
Chemical Purity Test
Step - 6
The Hardness Test
Step - 7
Splitting tendency check
Step - 8
Ductility test
Step - 9
fatigue test and compration test
Step - 10
impact, wear resistance test, corrosion test
Today's 550 D TMT Bar Price Table
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