Duplex 2304 Round Bar
Duplex 2304 Round Bar is a high-performance stainless steel alloy known for its excellent strength and corrosion resistance. This material belongs to the duplex stainless steel family, combining the benefits of both austenitic and ferritic stainless steels. Its balanced microstructure offers enhanced mechanical properties, making it suitable for demanding industrial environments. The round bar form is widely used as a raw material for machining and fabrication in various sectors.
Manufactured with precision, these bars typically exhibit a composition rich in chromium, nickel, and molybdenum, which contributes to their superior resistance against chloride-induced stress corrosion cracking. The 2304 grade offers a tensile strength range of approximately 620-850 MPa and good toughness at low temperatures, making it an ideal choice for structural components, pressure vessels, and chemical processing equipment. Its diameter and length can be customized to meet specific project requirements.
Common applications include offshore platforms, desalination plants, and heat exchangers, where exposure to aggressive environments demands reliable material performance. The duplex structure ensures excellent weldability and fatigue resistance, which are critical factors in maintaining the integrity of fabricated parts under cyclic loading conditions. Additionally, its ability to withstand pitting and crevice corrosion enhances longevity in marine and petrochemical industries.
These bars are produced under strict quality control protocols, adhering to international standards such as ASTM A276 and EN 10088, ensuring consistent chemical and mechanical properties. Export-ready packaging and certification documentation are provided to facilitate smooth logistics and compliance with global trade regulations. Suppliers often offer traceability and testing reports, supporting the material's suitability for critical applications worldwide.
For industrial buyers seeking durable and versatile stainless steel solutions, this grade of duplex round bar represents a cost-effective option that balances performance with fabrication ease. Its adaptability across various sectors underscores its value as a strategic material choice for projects requiring both strength and corrosion resistance in challenging operating environments.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex 2304 Round Bar Are Preferred by Global Buyers
- ✔ Factory Pricing: Direct manufacturer rates with bulk stock
- ✔ Certified Quality: ISO & 3rd-party tested, EN 10204 certified
- ✔ Export-Ready: Sea-worthy packaging for on-time delivery
- ✔ Fast RFQs: Quick quotes for custom sizes & quantities
- ✔ Traceability: 100% heat number tracking from raw material to finished product
Trusted by industries like oil & gas, petrochemicals, power, marine, and heavy engineering.
- Manufacturing Capacity: 500 MT / Month
- Export Experience: 15+ Years
- Countries Served: 50+
- Annual Export Volume: 5,500 MT
Table of Contents
- 1. What is Duplex 2304 Round Bar
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex 2304 Round Bar
- 4. Why Global Buyers Source from Ragnar Metals and Tubes
- 5. Features
- 6. Technical Overview
- 7. Specifications
- 8. Available Grades
- 9. Available Sizes
- 10. Chemical Properties
- 11. Mechanical Properties
- 12. Physical & Thermal Properties
- 13. Electrical Resistivity
- 14. Equivalent Grades
- 15. Manufacturing Process & Heat Treatment
- 16. Various Types
- 17. Applications & Uses
- 18. Industries We Serve
- 19. Latest Price List
- 20. MOQ & Payment Terms
- 21. Export Packaging & Shipping
- 22. Cities We Supply in India
- 23. Countries We Export Worldwide
- 24. Our Certifications
- 25. Quality Inspection & Testing
- 26. Our Other Product Types
- 27. People Also Search For
- 28. Frequently Asked Questions
- 29. About Ragnar Metals and Tubes
How to Choose the Right Duplex 2304 Round Bar
India is home to hundreds of manufacturers ranging from small job shops to large ISO-certified exporters. International and domestic buyers typically evaluate manufacturers based on quality compliance, production capacity, export experience, and pricing transparency.
- Certification & international standards (ASME, ASTM, EN)
- Manufacturing capability vs trading activity
- Export documentation & inspection support
- Stock availability & lead time reliability
- Past supply experience in oil & gas, EPC & heavy industries
Comparison Factors Among Duplex 2304 Round Bar
| Evaluation Factor | Small Local Suppliers | Trading Companies | ISO-Certified Manufacturers |
|---|---|---|---|
| Manufacturing Control | Limited | None | Full in-house / audited partners |
| International Standards | Basic | Depends on source | ASME / ASTM / EN |
| Inspection & MTCs | Limited | Inconsistent | EN 10204 3.1 / 3.2 |
| Export Experience | Low | Medium | 50+ countries |
| Risk for EPC Projects | High | Medium | Low |
International buyers typically prefer ISO-certified manufacturers for large-scale or critical applications due to better quality control, documentation, and lower project risk.
Why Global Buyers Choose Ragnar Metals and Tubes
Ragnar Metals and Tubes is a trusted ISO 9001:2015 certified manufacturer and global exporter of ferro alloys and metal products, supplying consistent, high-quality materials to customers across USA, UK, Europe, Middle East, Africa, and Asia-Pacific. Our focus on quality assurance, cost efficiency, and on-time delivery makes us a preferred sourcing partner for international buyers.
| Key Advantage | Buyer Benefit |
|---|---|
| ISO 9001:2015 Certified Manufacturing | Consistent quality with documented QA systems and process control |
| ASME / ASTM / EN Compliant Products | Globally accepted standards with EN 10204 3.1 / 3.2 MTCs |
| Lower Manufacturing & Sourcing Costs | Save up to 15–20% compared to European suppliers |
| Favorable Exchange Rate Advantage | Reduced landed cost for international importers |
| In-House Testing & Inspection Facilities | Strict chemical, mechanical & dimensional quality checks |
| Bulk Stock & High Production Capacity | Fast order fulfillment and stable supply for large projects |
| Custom Sizes & Drawing-Based Manufacturing | Products manufactured exactly to buyer specifications |
| Export-Grade Packaging & Global Logistics | Sea-worthy packing, palletization & worldwide shipping support |
| Faster Global Shipping Routes | Optimized logistics for Middle East, Africa & Southeast Asia |
| Technical & After-Sales Support | Project assistance, documentation & responsive RFQ handling |
| Trusted by Global Steel & EPC Companies | Proven export experience across 50+ countries |
Features of Duplex 2304 Round Bar
- ✔ High corrosion resistance, suitable for harsh environments
- ✔ Excellent strength-to-weight ratio, minimizing material usage
- ✔ Good weldability, allowing for easy fabrication and construction
- ✔ Superior mechanical properties, enhancing performance under stress
- ✔ Cost-effective alternative to higher alloyed duplex grades
- ✔ Versatile applications in various industries, including construction and marine
Technical Overview of Duplex 2304 Round Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex 2304 Round Bar | 22% Cr, 4% Ni, 0.2% N, Bal. Fe | Used in applications requiring high strength and corrosion resistance, such as in the oil and gas industry. | ASTM A240, ASTM A276, EN 10088-3 |
| Duplex 2304 Round Bar | 22% Cr, 4% Ni, 0.2% N, Bal. Fe | Ideal for marine environments and chemical processing equipment. | ASTM A240, ASTM A276, EN 10088-3 |
| Duplex 2304 Round Bar | 22% Cr, 4% Ni, 0.2% N, Bal. Fe | Recommended for use in structural applications where strength and resistance to stress corrosion cracking are critical. | ASTM A240, ASTM A276, EN 10088-3 |
Specifications Table
| Material | Duplex Stainless Steel 2304 |
|---|---|
| Grades | UNS S32304 |
| Standard | AISI, ASTM, ASME |
| Size Range | 10 mm to 200 mm diameter |
| Length | Up to 6 meters |
| Form | Round Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex 2304 Round Bar | 22% Cr, 3.2% Ni, 0.1% N | Oil and gas, Chemical processing, Marine environments |
| Duplex 2304 Round Bar | 22% Cr, 3.0% Ni, 0.1% N | Structural applications, Heat exchangers |
| Duplex 2304 Round Bar | 21% Cr, 4% Ni, 0.2% N | Pulp and paper industry, Food processing |
| Duplex 2304 Round Bar | 23% Cr, 2.5% Ni, 0.1% N | Power generation, Desalination plants |
| Duplex 2304 Round Bar | 22% Cr, 3.5% Ni, 0.2% N | Petrochemical industry, Water treatment |
Available Sizes of Duplex 2304 Round Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 10 | 12 |
| 14 | 16 |
| 20 | 25 |
| 30 | 35 |
| 40 | 45 |
| 50 | 60 |
| 70 | 80 |
| 90 | 100 |
| 110 | 120 |
| 150 | 200 |
Chemical Properties of Duplex 2304 Round Bar
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 19.0 - 21.0 |
| Nickel (Ni) | 4.5 - 6.5 |
| Molybdenum (Mo) | 0.5 - 1.5 |
| Manganese (Mn) | 2.0 - 4.0 |
| Silicon (Si) | 0.5 - 1.0 |
| Carbon (C) | ≤ 0.03 |
| Sulfur (S) | ≤ 0.01 |
| Iron (Fe) | Balance |
Mechanical Properties of Duplex 2304 Round Bar
| Property | Value |
|---|---|
| Tensile Strength | 550 MPa |
| Yield Strength | 400 MPa |
| Elongation | 25% |
| Hardness | 220 HB |
| Impact Energy (Charpy V-notch) | 40 J at -20°C |
Duplex 2304 Round Bar – Physical & Thermal Properties
Density of Duplex 2304 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.1 g/cm³ | 0.256 lb/in³ |
Melting Point of Duplex 2304 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1400 - 1450 °C | 2552 - 2642 °F |
Specific Heat of Duplex 2304 Round Bar
| Specific Heat of Duplex 2304 Round Bar | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Annealed |
| 450 | 100 - 300 | Annealed |
| 400 | 300 - 600 | Annealed |
Electrical Resistivity of Duplex 2304 Round Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.75 | 20 | As-rolled |
| 0.78 | 100 | |
| 0.80 | 200 | |
| 0.82 | 300 | |
| 0.85 | 400 | |
Equivalent of Duplex 2304 Round Bar
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| EN 1.4362 | 2343 | S32304 |
| AISI | 2304 | S23040 |
Manufacturing Process & Heat Treatment of Duplex 2304 Round Bar
Annealing
Annealing of Duplex 2304 round bars involves heating the material to a temperature range of 1020-1100°C, followed by controlled cooling. This process helps to relieve internal stresses, improve ductility, and enhance the overall mechanical properties of the steel.
Forging
Forging of Duplex 2304 round bars is typically performed at temperatures between 1000-1200°C. This process involves shaping the metal through compressive forces, which refine the grain structure and improve strength. The forging process is crucial to achieving the desired mechanical properties and dimensional accuracy.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1000-1100 | Water or Oil | To increase hardness and strength |
| Tempering | 600-800 | Air | To reduce brittleness and improve toughness |
| Stress Relieving | 400-600 | Air | To relieve residual stresses from the manufacturing process |
The manufacturing and heat treatment processes for Duplex 2304 round bars are essential to achieving optimal performance characteristics, making them suitable for various industrial applications.
Various Types
Duplex 2304 Round Bar - Standard
- Diameter: 6mm to 300mm
- Condition: Hot Rolled, Cold Drawn
- Applications: Construction, Shipbuilding, Oil & Gas
Duplex 2304 Round Bar - Polished
- Diameter: 10mm to 50mm
- Condition: Polished
- Applications: Architectural, Decorative, Food Processing
Duplex 2304 Round Bar - Heat Treated
- Diameter: 12mm to 200mm
- Condition: Heat Treated
- Applications: Aerospace, High-Strength Applications
Duplex 2304 Round Bar - Custom Size
- Diameter: Custom
- Condition: Custom
- Applications: Tailored Solutions for Specific Industries
Applications & Uses
- Oil & Gas Industry: Pipelines, process piping, and high-pressure fluid handling systems.
- Petrochemical & Refineries: Reactors, heat exchangers, and chemical processing units.
- Water Treatment Plants: Filtration systems, storage tanks, and corrosion-resistant piping.
- Pharmaceutical Industry: Hygienic piping, sanitary fittings, and cleanroom equipment.
- Food & Beverage: Processing lines, storage vessels, and contamination-free pipelines.
- Automobile & Engineering: Exhaust systems, structural parts, and precision components.
- Power & Energy Sector: Boilers, condensers, and turbine piping systems.
- Marine & Offshore: Shipbuilding, offshore platforms, and coastal infrastructure.
- Construction & Infrastructure: Structural frameworks, bridges, and industrial buildings.
Industries We Serve
Our stainless steel, alloy steel, and high-performance metal products are widely used across the following industries:
Latest Price List of Duplex 2304 Round Bar
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Duplex 2304 | 3 mm | $2.50 – $2.70 | ₹207 – ₹224 |
| Duplex 2304 | 6 mm | $2.45 – $2.65 | ₹203 – ₹220 |
| Duplex 2304 | 10 mm | $2.40 – $2.60 | ₹200 – ₹218 |
Note: Prices are indicative and may vary based on size, quantity, raw material cost, and delivery location. Contact us for the latest quotation for Duplex 2304 Round Bar.
MOQ & Payment Terms
Minimum Order Quantity: 25–100 Kg depending on part size and grade.
Payment Terms: Depending On Grade and Quantity Size
Export Packaging & Shipping
- Seaworthy, fumigated wooden crates with waterproof inner lining
- Palletised packing with clear shipping marks and heat number identification
- Container stuffing supervision with loading photographs available on request
We Exported to 50+ Countries Worldwide
| Global Export Destinations | |||||
|---|---|---|---|---|---|
| United States | Canada | Mexico | United Kingdom | Germany | Netherlands |
| Italy | Spain | South Africa | Australia | India | Korea |
| United Arab Emirates | Saudi Arabia | Qatar | Kuwait | Oman | Bahrain |
| Singapore | Malaysia | Indonesia | Dubai | Riyadh | Dammam |
Our Certifications
We are a certified manufacturer and exporter, committed to strict quality control and international compliance standards. Below are our key certifications.
GST Registered
ISO 9001:2015
ISO 1002:2018
Udyam MSME Registration
Testing Process & Quality Assurance – Ragnar Metals & Tubes
At Ragnar Metals & Tubes, our testing process ensures the safety, reliability, and performance of stainless steel and alloy steel products supplied for global industrial and infrastructure projects. Each batch is verified from raw material selection to final dispatch under internationally recognized standards including ASTM, ASME, ISO, DIN, and EN.
Detects internal flaws using high-frequency sound waves
Measures yield strength, elongation, and material durability
Evaluates toughness under low-temperature and high-stress conditions
Ensures smoothness, coating quality, and visual compliance
Enhances hardness, strength, and corrosion resistance
Measures resistance to deformation and wear
Documentation & Global Compliance
- ✔ EN 10204 3.1 / 3.2 Mill Test Certificates (MTC)
- ✔ Batch-wise quality traceability and inspection records
- ✔ Third-party inspection by SGS, TUV, Bureau Veritas & Lloyd’s
- ✔ Export documentation support for customs and international shipping
Supporting supply for oil & gas, petrochemical, power generation, marine, infrastructure, and heavy engineering industries worldwide.
Related Products
Explore our full range of stainless steel and alloy steel products including pipes, tubes, fittings, flanges, sheets, plates, spools, fasteners, round bars, and special grades manufactured for industrial, infrastructure, and global export applications.
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Frequently Asked Questions
About Ragnar Metals & Tubes
- ✔ Leading manufacturer, stockist, and exporter of stainless steel and alloy steel products for industrial and infrastructure projects
- ✔ ISO 9001:2015 certified quality management system ensuring consistent product reliability and compliance
- ✔ Specialized in precision pipes, tubes, fittings, flanges, sheets, plates, fasteners, and round bars
- ✔ Modern processing and testing facilities with advanced manufacturing and inspection equipment
- ✔ Custom-engineered solutions based on client drawings and technical specifications
- ✔ Full material traceability with EN 10204 3.1 / 3.2 mill test certification
- ✔ Compliance with ASTM, ASME, DIN, EN, and ISO international standards
- ✔ Trusted global supplier supporting oil & gas, petrochemical, power, marine, and heavy engineering industries