Tusker TMT 550D

State-of-the-art manufacturing. Premium Fe 550D grade properties — corrosion resistance, superior bendability, excellent weldability — at pricing that doesn't carry the usual premium mark-up.

Swear of Strength
Our Range

Choose Your Grade

We manufacture three grades under the Tusker TMT brand — each meeting or exceeding BIS IS 1786:2008 requirements.

FLAGSHIP
Fe 550D
High Ductility Grade

Our primary product and the reason builders trust Tusker. The 'D' designation means significantly higher ductility — critical for earthquake-resistant structures and modern construction standards.

  • Min. Yield Strength: 560 N/mm²
  • Min. Tensile Strength: 610 N/mm²
  • Min. Elongation: 16%
  • UTS/YS Ratio: ≥ 1.08

Available Diameters

6mm8mm10mm12mm16mm20mm25mm
Fe 550
Standard High Strength

High-strength Fe 550 grade TMT bars for projects requiring superior yield strength. A reliable choice for general construction, foundations, columns, and beams across residential and commercial projects.

  • Min. Yield Strength: 550 N/mm²
  • Min. Tensile Strength: 585 N/mm²
  • Min. Elongation: 10%
  • UTS/YS Ratio: ≥ 1.06

Available Diameters

6mm8mm10mm12mm16mm20mm25mm
COASTAL GRADE
Fe 550D CRS
Corrosion Resistant Steel

Copper-bearing Fe 550D TMT bars engineered for superior corrosion resistance — 2 to 3× better atmospheric and chloride corrosion resistance than standard IS 1786 grade. Mandatory for coastal Kerala, Tamil Nadu coastal belts, industrial zones, and marine structures.

  • All Fe 550D strength & ductility properties
  • Copper-alloyed: 2–3× superior corrosion resistance
  • Low sulphur & phosphorus: fewer internal inclusion sites
  • Ideal for: coastal construction, Kerala & South TN
  • Marine structures, underground & industrial zones
  • Reduced long-term maintenance & lifecycle cost
Why CRS matters in coastal conditions: Chloride ions from sea air penetrate concrete cover and attack steel. CRS chemistry — controlled copper content and tighter impurity limits — significantly slows this process, protecting your structure over its full design life.

Available Diameters

6mm8mm10mm12mm16mm20mm25mm
SITE-READY
TMT Stirrups
Readymade Rings — Cut & Bent to Size

Pre-bent, precision-cut stirrups made from our own Tusker TMT 550D bars — the same steel, same chemistry, same traceability. Delivered site-ready, saving your team cutting time, reducing on-site wastage, and ensuring consistent stirrup geometry across every batch.

  • Made from Tusker Fe 550D in-house bars — fully traceable
  • Available in 6mm and 8mm diameters
  • Customisable sizes: any dimension to your specification
  • Eliminates on-site bending & reduces steel wastage
  • Consistent geometry — no variation between batches
  • Saves labour time and reduces site errors
Custom sizes available: Provide your column/beam dimensions and we supply stirrups cut and bent to exact specification — ready to tie, not to bend.

Bar Diameters

6mm8mm
Enquire for Custom Sizes

All grades available in cut-to-length. Stirrups available in custom sizes. Contact us for grade-specific availability, stirrup sizing, and pricing.

Technical Specifications

Mechanical Properties

Tusker Fe 550D consistently exceeds BIS IS 1786:2008 standards in all key mechanical parameters. Our superior Thermex quenching process delivers higher yield strength, tensile strength, and elongation than the minimum required.

PARAMETER (MIN) TUSKER FE 550 TUSKER FE 550D CRS
BIS MIN TUSKER BIS MIN TUSKER CRS
Yield Strength (N/mm²) 550 560 550 616
Ultimate Tensile Strength (N/mm²) 600 610 600 671
Elongation (%) 14.5 16 14.5 18
Chemical Composition

Chemical Properties

CONSTITUENT TUSKER FE 550 TUSKER FE 550D CRS
BIS MAX TUSKER BIS MAX TUSKER
Carbon 0.25 0.21 0.25 0.21
Sulphur 0.04 0.035 0.04 0.035
Phosphorus 0.04 0.035 0.04 0.035
Manganese ≥ 0.60 ≥ 0.65 ≥ 0.60 ≥ 0.65
Sulphur + Phosphorus 0.075 0.070 0.075 0.070

All values as per IS 1786:2008 standard. Tusker values represent typical production batch results.

Product Range

Weight Per Metre — BIS Standard vs Tusker Values

Tusker TMT 550D bars are manufactured within the BIS standard weight range, with our production values consistently in the upper end — ensuring you get maximum steel per metre.

SIZE (mm) BIS STANDARD KG/MTR. TUSKER VALUES KG/MTR.
MIN AVG MAX TUSKER RANGE
6 0.2070.2220.237 0.210 – 0.225
8 0.3670.3950.423 0.375 – 0.400
10 0.5740.6170.660 0.580 – 0.620
12 0.8440.8880.932 0.850 – 0.910
16 1.5011.5801.659 1.510 – 1.600
20 2.3962.4702.544 2.400 – 2.510
25 3.7343.8563.964 3.750 – 3.910

Precision Cut-to-Length

Zero Waste Manufacturing for Maximum Efficiency

Tools

Steel Weight Calculator — 550D CRS

Calculate Bar Weight

Weight per Bar
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Total Weight
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Total in MT
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Cost Estimate*
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Calculated using BIS minimum weights (IS 1786:2008) for a conservative estimate. *Cost is indicative — contact us for exact pricing.

Quality Assurance

Certifications & Approvals

📋

IS 1786:2008

BIS Certified High Strength Deformed Steel Bars and Wires for Concrete Reinforcement. Meets all mechanical and physical property requirements.

⚙️

Fe 550D Grade

Premium Grade Steel with minimum yield strength of 550 N/mm². Engineered for superior structural performance and longevity.

🌱

Eco-Friendly Process

Hot Charging Technology reduces energy consumption. Sustainable manufacturing practices without compromising on quality or performance.

Tamil Nadu Public Works Department official seal

TN PWD Approved

Tamil Nadu Public Works Department

Approved for use in government infrastructure and construction projects across Tamil Nadu — bridges, roads, public buildings, and water infrastructure.

Premium Grade · Accessible Pricing

Why Tusker TMT 550D Outperforms

The material properties of an integrated premium manufacturer. The pricing of a focused, owner-driven plant with zero middleman overhead.

Beats Corrosion

Copper-bearing Fe 550D CRS chemistry forms a passive oxide barrier, delivering 2–3× the corrosion resistance of standard TMT — critical for coastal Tamil Nadu and Kerala.

Superior Bendability

≥16% elongation at break — tested on-site with our 100MT UTM. The Thermex-quenched soft ferrite-pearlite core bends true at every angle without cracking or spring-back.

Excellent Weldability

Carbon Equivalent (CE) ≤ 0.42 — the IS 1786:2008 threshold that eliminates the need for pre-heating, reduces weld failures, and speeds up site work.

State-of-the-Art Facility

German Thermex quenching technology, a 12MT induction furnace, and a Bruker XRF spectrometer for melt chemistry verification — not a single heat leaves the plant unverified.

560 N/mm² Yield Strength

Minimum 560 N/mm² yield strength — CTAL accredited lab verified, batch by batch. Every MTC shipped with your order, every time.

Full Batch Traceability

Heat-number test certificates accompany every dispatch. Three active BIS licences, 40+ years of manufacturing records, and a Startup India recognised operation behind every bundle — so you always know exactly what went into your concrete.

Quality Assurance

BIS Certifications & Test Reports

Tusker TMT 550D is manufactured under three BIS licenses and carries the ISI mark. Every shipment includes full traceability and test documentation.

ISI MARK BIS CERTIFIED

IS 1786:2008

Fe 550D TMT Bars

CML No. 6900106309

ISI MARK BIS CERTIFIED

IS 15911

Steel Products

CML No. 6400173406

ISI MARK BIS CERTIFIED

IS 14650:2023

Steel Billets

CML No. 6900104709

Test Reports
BIS Test Report
Certificate No. 25005194–5212
Click to view PDF ↗
CTAL Test Report
Chemical & Mechanical Analysis
Click to view PDF ↗
Verified Test Results — IS 1786:2008, Fe 550D

Mechanical Properties (MSME Test Report)

Property IS 1786 Min Observed
Tensile Strength 600 N/mm² ≥ 625 N/mm²
Yield Strength 550 N/mm² ≥ 565 N/mm²
Elongation 16% min ≥ 18%
UTS / YS Ratio 1.08 min ≥ 1.10

MSME Testing Centre, Chennai · Report No. 25005194–5212 · Sept 2025

Chemical Composition (CTAL Analysis)

Element IS 1786 Max Observed
Carbon 0.25% 0.22%
Sulphur 0.040% 0.027%
Phosphorus 0.040% 0.035%
S + P Combined 0.075% 0.062%
Manganese — 0.58%

Chemical Testing & Analytical Laboratory (CTAL), Govt. of Tamil Nadu · Guindy, Chennai

In Action

See Tusker TMT in Action

Go inside our Palavoor facility. Watch the steel being forged, rolled, and finished to exacting standards.

Tusker TMT — Brand Story

The making of Tusker TMT 550D. From raw material to finished bar — crafted with precision.

Facility Flyover

An aerial and ground-level tour of our Palavoor manufacturing facility in Tamil Nadu.

Ferrosco Industries — Our Story

Four decades of steel excellence. See how Ferrosco Industries became Tamil Nadu's most trusted TMT manufacturer.

BIS Certified | Fe 550D | Made in Tirunelveli

Build Stronger. Specify Tusker TMT 550D.

Talk to our team for grade recommendations, batch test certificates, custom cut lengths, or volume pricing.

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