Manufacturer, Supplier & Exporter of Duplex 2003 Round Bar
Duplex 2003 Round Bar is a highly advanced duplex stainless-steel alloy designed to offer exceptional performance in corrosive, high-stress, and demanding industrial environments. As a balanced ferritic-austenitic grade, Duplex 2003 provides significantly higher strength compared to standard austenitic stainless steels while maintaining excellent ductility and toughness. Riddhi Siddhi Impex, a trusted manufacturer and supplier in India, produces these bars using premium melting practices and strict metallurgical controls, ensuring a consistent duplex microstructure. Industries prefer Duplex 2003 Round Bars for equipment that must function reliably under chloride exposure, mechanical fatigue, and dynamic loading conditions..
The duplex microstructure of Duplex 2003 combines the benefits of both ferrite and austenite phases, resulting in a stronger, more corrosion-resistant material compared with conventional grades like 304 or 316. The alloy’s enhanced chromium, nitrogen, and molybdenum levels give it excellent resistance to pitting, crevice corrosion, and chloride stress-corrosion cracking. Riddhi Siddhi Impex ensures each Duplex 2003 Round Bar is manufactured under tightly monitored conditions, including controlled heat treatment that refines grain structure, improves toughness, and maximizes overall corrosion resistance. This makes Duplex 2003 a reliable choice for marine, petrochemical, desalination, and structural engineering industries..
At Riddhi Siddhi Impex, Duplex 2003 Round Bars are manufactured with advanced production techniques such as hot rolling, forging, solution annealing, and precision straightening. Their facility follows international quality guidelines to maintain uniformity in diameter, roundness, straightness, and surface finish. Each bar undergoes rigorous inspection methods including PMI (Positive Material Identification), ultrasonic testing (UT), Eddy current testing, hardness tests, tensile tests, and microstructure examination. This systematic quality assurance ensures that each round bar delivered meets the exact specifications required for industrial use and project certifications..
One of the biggest advantages of Duplex 2003 Round Bar is its impressive mechanical performance, which includes higher yield strength typically double that of standard stainless steels, excellent fatigue strength, and good impact resistance. Its corrosion resistance under chloride environments makes it ideal for seawater cooling, desalination units, and brine tanks. Additionally, its excellent weldability and formability enable easy fabrication during construction and installation. These mechanical and corrosion-resistant features reduce maintenance costs and extend equipment life, making Duplex 2003 a preferred material for long-term industrial use..
Duplex 2003 Round Bars are used extensively in offshore structures, marine components, chemical processing systems, refinery piping, paper & pulp equipment, heat exchanger supports, automotive parts, and structural frameworks in corrosive environments. Their high strength allows engineers to use thinner sections, reducing material consumption and overall project cost. Their superior toughness ensures safety and reliability under extreme temperature variations and mechanical loads. Riddhi Siddhi Impex supplies these bars in rough-turned, polished, ground, peeled, and bright-bar conditions depending on the application requirement.
Duplex 2003 Round Bar – Specifications
| Specification | Description |
|---|---|
| Product Name | Duplex 2003 Round Bar |
| Manufacturer / Supplier | Riddhi Siddhi Impex (India) |
| Material Grade | Duplex Stainless Steel 2003 |
| Size Range | 10mm to 350mm Diameter |
| Length | 1 Meter – 6 Meters (Custom Cut Available) |
| Manufacturing Process | Hot Rolled, Cold Drawn, Forged, Heat-Treated |
| Finish | Black, Bright, Polished, Peeled, Centerless Ground |
| Testing | PMI, UT, Hardness, Tensile, Eddy Current Test |
Chemical Composition of Duplex 2003 Round Bar
| Element | Content (%) |
|---|---|
| Chromium (Cr) | ≈ 20 – 21% |
| Nickel (Ni) | ≈ 1.5 – 4% |
| Molybdenum (Mo) | ≈ 0.3 – 0.8% |
| Nitrogen (N) | ≈ 0.1 – 0.25% |
| Manganese (Mn) | ≤ 2% |
| Silicon (Si) | ≤ 1% |
| Carbon (C) | ≤ 0.03% |
| Iron (Fe) | Balance |
Mechanical Properties of Duplex 2003 Round Bar
| Property | Value |
|---|---|
| Tensile Strength | ≥ 600 MPa |
| Yield Strength | ≥ 400 MPa |
| Elongation | ≥ 25% |
| Hardness | ≤ 290 HB |
| Impact Strength | High (Charpy Tested) |
Dimension Chart of Duplex 2003 Round Bar
| Diameter (mm) | Approx. Weight (kg/m) |
|---|---|
| 10 mm | 0.62 |
| 20 mm | 2.47 |
| 30 mm | 5.58 |
| 40 mm | 9.87 |
| 50 mm | 15.43 |
| 60 mm | 22.17 |
| 80 mm | 39.47 |
| 100 mm | 61.60 |
Equivalent Grades of Duplex 2003
| Standard | Equivalent Grade |
|---|---|
| UNS | S2003 |
| EN | 1.4480 (Approx.) |
| WNR | 1.4480 |
| Brand Equivalents | LDX 2003 (Sometimes Marketed) |
Equivalent Standards
| Standard | Description |
|---|---|
| ASTM A276 | Standard for Stainless Steel Bars |
| ASTM A479 | Bars for Pressure Vessels |
| ASME SA276 | ASME Version for Stainless Bars |
| EN 10088 | European Stainless Steel Standard |
Other Types of Duplex 2003 Round Bars
| Type | Description |
|---|---|
| Hot Rolled Round Bar | Used for heavy engineering and structural use |
| Cold Drawn Round Bar | Superior dimensional accuracy |
| Bright Bar | Mirror-polished / smooth surface |
| Forged Bar | High strength applications |
| Black Bar | As-rolled industrial use |
Riddhi Siddhi Impex supplies Duplex 2003 Round Bars in a wide range of diameters and lengths suitable for machining, forging, and fabrication work. They provide customized cutting-to-length, CNC machining, threading, chamfering, and special surface finishing like mirror polish or centerless grinding. Bars are available in hot-rolled, cold-drawn, and heat-treated forms. Their expert team ensures bars meet dimensional tolerances required for OEM applications, heavy engineering components, and high-precision machining tasks. Packaging is done using protective wrapping, end-capping, seaworthy bundles, and wooden boxes for safe transportation.
Frequently Asked Questions (FAQs)
- Q1: What are the main uses of Duplex 2003 Round Bar?
- A1: It is used in marine equipment, chemical processing, pressure vessels, desalination plants, and structural applications.
- Q2: Does Duplex 2003 resist chloride corrosion?
- A2: Yes, Duplex 2003 has excellent resistance to chloride-induced stress corrosion cracking and pitting.
- Q3: What finishing options does Riddhi Siddhi Impex provide?
- A3: Polished, bright-drawn, centerless ground, black, and rough-turned finishes are available.
- Q4: Can Duplex 2003 Round Bar be customized?
- A4: Yes, customized cutting, machining, threading, and special lengths are available.
Cities we have supplied our products to
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Countries we have supplied our products to
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