Stainless Steel Sheets Supplier | Manufacturer
Thickness: 0.03 mm to 45 mm, or as customers’ demands.
Sizes: 2500 X 1250 X 0.4MM, 3000 X 1500 X 2.5MM, etc. Or as your requirement.
Finish: No.1, 2B, No.4, BA, Embossed, Etch, etc.
Standard: ASTM A240, ASTM A789, and ASTM A790.
✔ Offshore oil & gas systems
✔ Chemical processing equipment
✔ Desalination plants
✔ Marine and subsea applications
Duplex 2205 Stainless Steel of Specification and Size
Stainless steel sheet Duplex 2507 stainless steel sheet, also known as UNS S32750 or 1.4410, is a super duplex stainless steel renowned for its exceptional combination of high strength, superior corrosion resistance, and excellent mechanical properties. This material is specifically designed to withstand harsh environments, making it ideal for various industrial applications where traditional stainless steels may fail.
| Parameter | ASTM A240 | EN 10088-3 | NORSOK MDS D45 |
|---|---|---|---|
| Grade | S32750 | 1.4410 | SAF 2507 |
| Thickness Range | 0.5-100mm | 0.5-50mm | 3-50mm |
| Width | 1000-2000mm | 1000-1800mm | – |
| Surface Finish | 2B, No.1, BA | 2R, 2B | 2B |
Alloy Specification
Dimensional Specifications
Duplex 2507 stainless steel sheets are available in a wide range of thicknesses, typically from 0.3mm to 350mm, and widths and lengths that can be customized to meet specific project requirements. This flexibility in dimensions allows for versatile applications across different industries.
Standards Compliance
The production of Duplex 2507 stainless steel sheets adheres to international standards such as ASTM A240, ASTM A789, and ASTM A790. These standards ensure that the material meets strict quality and performance criteria, guaranteeing its reliability in various applications.
Chemical Composition of Duplex 2205 Stainless Steel
| Element | Target | Range | Effect |
|---|---|---|---|
| Cr | 25.0% | 24-26% | Corrosion resistance |
| Ni | 7.0% | 6-8% | Austenite stability |
| Mo | 4.0% | 3-5% | Pitting resistance |
| N | 0.28% | 0.24-0.32% | Strength boost |
| Fe | Balance | – | Matrix |
The high chromium content provides excellent resistance to oxidation and corrosion, while the addition of nickel and molybdenum enhances its resistance to pitting and crevice corrosion, especially in chloride-containing environments. Nitrogen further improves the material’s strength and corrosion resistance.
Physical Properties of Duplex 2205 Stainless Steel
| Property | Value | Test Standard |
|---|---|---|
| Density | 7.8 g/cm³ | ASTM B311 |
| Melting Range | 1425-1475°C | – |
| Thermal Conductivity | 15 W/m·K | ASTM E1461 |
| Electrical Resistivity | 0.8 μΩ·m | IEC 60468 |
| Magnetic Response | Yes (ferritic phase) | – |
These physical properties make Duplex 2507 stainless steel suitable for high-temperature applications and environments where thermal stability is crucial. Its low thermal expansion coefficient reduces the risk of thermal stress and distortion during heating and cooling cycles.
Corrosion Performance Comparison:
| Environment | 2507 | 316L | 6Mo |
|---|---|---|---|
| 3.5% NaCl | 0.001 mm/yr | 0.1 mm/yr | 0.01 mm/yr |
| 10% H₂SO₄ | 0.01 mm/yr | 0.5 mm/yr | 0.05 mm/yr |
Mechanical Properties of Duplex 2205 Stainless Steel
| Condition | Yield (MPa) | Tensile (MPa) | Elongation | Hardness |
|---|---|---|---|---|
| Annealed | 550 min | 800-1000 | 25% min | 290 HB |
| Cold Worked (20%) | 850 | 1000-1200 | 15% | 320 HB |
Impact Toughness:
Charpy V-notch: >100J @ -40°C
CTOD: >0.5mm (marine qualification)
- The high tensile and yield strengths of Duplex 2507 stainless steel allow it to withstand high loads and stresses without deformation or failure. Its excellent elongation ensures good ductility, making it easier to form and fabricate into various shapes and sizes. The material’s hardness contributes to its wear resistance, prolonging the service life of components in abrasive environments.
Benefits of Using Duplex 2205 Stainless Steel Sheet
Superior Corrosion Resistance
Duplex 2507 stainless steel exhibits exceptional resistance to a wide range of corrosive media, including acids, alkalis, and chloride solutions. It is particularly effective in resisting pitting, crevice corrosion, and stress corrosion cracking, making it ideal for applications in the chemical, petrochemical, and marine industries.
High Strength-to-Weight Ratio
With its high strength and relatively low density, Duplex 2507 stainless steel offers a high strength-to-weight ratio. This property allows for the design of lighter and more efficient structures without compromising on strength and durability, reducing material costs and transportation expenses.
Good Weldability
Despite its high alloy content, Duplex 2507 stainless steel is relatively easy to weld using conventional welding methods such as TIG, MIG, and SMAW. Proper welding procedures and filler materials can ensure the formation of a sound and corrosion-resistant weld joint, maintaining the material’s integrity and performance.
Excellent Fatigue Resistance
The material’s dual-phase microstructure, consisting of austenite and ferrite, provides excellent fatigue resistance. It can withstand repeated loading and unloading cycles without experiencing significant fatigue damage, making it suitable for applications subjected to dynamic loads and vibrations.
Tips for Procurement and Cost-Effectiveness
Quality Assurance
When procuring Duplex 2507 stainless steel sheets, it is essential to choose a reputable supplier who adheres to strict quality control standards. Ensure that the material meets the required specifications and has undergone appropriate testing and certification to guarantee its performance and reliability.
Comparative Analysis
Compare prices and quality from different suppliers to obtain the best value for money. Consider factors such as material grade, dimensions, surface finish, and delivery lead times when making procurement decisions. Requesting samples for testing and evaluation can also help in making an informed choice.
Bulk Purchasing
Bulk purchasing can often lead to cost savings due to economies of scale. If your project requires a large quantity of Duplex 2507 stainless steel sheets, negotiate with suppliers for volume discounts and favorable payment terms.
Long-Term Cost Considerations
While the initial cost of Duplex 2507 stainless steel may be higher than that of other materials, its long-term benefits, such as reduced maintenance costs, extended service life, and improved reliability, can result in significant cost savings over the material’s lifecycle.
Manufacturing and Cost
The manufacturing process of Duplex 2507 stainless steel sheets involves several steps, including melting, casting, hot rolling, cold rolling, annealing, and finishing. The cost of production is influenced by factors such as raw material prices, energy consumption, labor costs, and manufacturing overheads.
The high alloy content of Duplex 2507 stainless steel, particularly the chromium, nickel, and molybdenum, contributes to its relatively higher cost compared to conventional stainless steels. However, the material’s superior performance and long-term durability justify the investment in many critical applications.
Pricing Insights
The price of Duplex 2507 stainless steel sheets can vary depending on market conditions, supply and demand dynamics, and geographical location. Generally, prices tend to be higher in regions with limited production capacity or high transportation costs. It is advisable to monitor market trends and consult with suppliers to obtain the most up-to-date pricing information.
Applications of Alloy in Various Industries
Oil and Gas Industry
Duplex 2507 stainless steel sheets are widely used in the oil and gas industry for the construction of offshore platforms, pipelines, heat exchangers, and pressure vessels. Its excellent corrosion resistance in saline environments and high strength make it ideal for withstanding the harsh conditions encountered in offshore drilling and production operations.
Chemical Processing Industry
In the chemical processing industry, the material is used for the manufacture of reactors, tanks, pumps, and valves. Its resistance to a wide range of chemicals, including acids, alkalis, and solvents, ensures the safe and reliable operation of chemical processing plants.
Marine Engineering
The marine industry benefits from Duplex 2507 stainless steel’s superior resistance to seawater corrosion and biofouling. It is used in the construction of ship hulls, propellers, deck fittings, and offshore structures, providing long-lasting protection against the corrosive effects of the marine environment.
Desalination Plants
Desalination plants rely on Duplex 2507 stainless steel sheets for the construction of seawater intake pipes, heat exchangers, and membrane modules. Its resistance to chloride-induced stress corrosion cracking and pitting corrosion ensures the efficient and reliable operation of desalination processes, producing high-quality freshwater from seawater.
Paper and Pulp Industry
In the paper and pulp industry, the material is used for the manufacture of digesters, bleach plants, and evaporators. Its resistance to corrosion from acidic and alkaline solutions, as well as its high-temperature strength, makes it suitable for the demanding conditions encountered in paper and pulp production.
| Industry | Application | Why 2507? |
|---|---|---|
| Offshore | Christmas trees | H₂S resistance |
| Chemical | Reactor vessels | HCl service |
| Desalination | RO membranes | 50-year life |
| LNG | Heat exchangers | -165°C toughness |
In Conclusion
When to Choose 2507:
Chloride levels >10,000 ppm
H₂S partial pressure >0.1 psi
Required yield strength >550MPa
Future Developments:
Additive manufacturing powders (2025)
Improved weldability formulations
Thinner gauges for weight savings
Total Cost of Ownership:
| Material | Initial Cost | 20-Year Cost |
|---|---|---|
| 2507 | $10/kg | $15/kg |
| Carbon Steel | $1/kg | $50/kg |
| 6Mo Austenitic | $20/kg | $25/kg |
Duplex 2507 stainless steel sheet is a versatile and high-performance material that offers a unique combination of superior corrosion resistance, high strength, and excellent mechanical properties. Its wide range of applications across various industries, including oil and gas, chemical processing, marine engineering, desalination, and paper and pulp, demonstrates its reliability and effectiveness in harsh and demanding environments.
When procuring Duplex 2507 stainless steel sheets, it is important to consider factors such as quality assurance, cost-effectiveness, and long-term performance. By choosing a reputable supplier and following best practices in procurement and manufacturing, you can ensure that your projects benefit from the exceptional properties of this remarkable material.
Duplex 2507 stainless steel sheet is a valuable investment for any application that requires high performance, durability, and reliability. Its unique properties and wide range of applications make it a preferred choice for engineers, designers, and manufacturers seeking to overcome the challenges of modern industrial environments.