When standard stainless steel isn’t enough, Super Duplex 2507 provides the ultimate solution. As a leading supplier, Salem Treated Steel offers high-quality SS Duplex 2507 coils designed for extreme environments where high strength and chloride resistance are non-negotiable. Often referred to as “Super Duplex,” this 25% Chromium alloy outperforms 2205 in both mechanical strength and corrosion barriers, making it the premier choice for offshore, chemical, and petrochemical industries.
Experience the superior performance of Stainless Steel Duplex 2507 Coils (UNS S32750), a nitrogen-enhanced super duplex with 25% chromium, 7% nickel, and 4% molybdenum that delivers:
- Unrivaled Corrosion Resistance: PREN > 40 (highest in duplex family) provides exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments like seawater and acidic conditions.
- Extreme Strength: Minimum yield strength of 550 MPa (80 ksi)—nearly 50% stronger than 2205—enables thinner gauges and significant weight/material cost savings.
- Wide Chemical Resistance: Highly resistant to uniform corrosion by organic acids (formic, acetic) and inorganic acids, plus carbide-related intergranular attack.
| Element | Symbol | Min (%) | Max (%) |
|---|---|---|---|
| Chromium | Cr | 24.00 | 26.00 |
| Nickel | Ni | 6.00 | 8.00 |
| Molybdenum | Mo | 3.00 | 5.00 |
| Nitrogen | N | 0.44 | 0.32 |
| Manganese | Mn | – | 1.20 |
| Silicon | Si | – | 0.80 |
| Copper | Cu | – | 0.50 |
| Carbon | C | – | 0.030 |
| Phosphorus | P | – | 0.035 |
| Sulfur | S | – | 0.020 |
| Iron | Fe | – | Balance |
Mechanical Properties of Stainless Steel Duplex 2507 Coils:
| Property | Minimum Value (UNS S32205) |
|---|---|
| Tensile Strength (UTS) | 750-800 MPa (109-116 ksi) |
| Yield Strength ( 0.2 % Proof) | 550 MPa (80 ksi) |
| Elongation (50mm guage) | 20% |
| Hardness (Brinell/HRC) | ≤310 HB / 32 HRC max |
| Impact Toughness (Charpy V-notch, RT) | ≥74 ft-lbs (100 J) |
Physical Properties of Duplex 2507 Coils:
| Property | Value (Imperial) |
|---|---|
| Density | 7.80 g/cm³ |
| Melting Range | 1385-1427°C |
| Specific Heat (32-212°F) | 500 J/kg·K |
| Thermal Conductivity (212°F) | 16-17 W/m·K |
| Coefficient of Thermal Expansion (68-212°F) | 13.0 × 10⁻⁶ /K |
| Electrical Resistivity | 0.85 µΩ·m |
| Modulus of Elasticity | 205 GPa |
Product Specifications:
| Property | Options/Sizes |
|---|---|
| Grade | Duplex Steel 2507 (UNS S32750 / 1.4410) | Standard | ASTM A240 / ASME SA240 |
| Thickness | 4 mm to 100 mm |
| Width | 10 mm to 2500 mm |
| Length | 2m, 2.44m, 3m (custom lengths available) |
| Surface Finish | 2B, 2D, BA, No.1, No.4, No.8, 8K, mirror, checkered, embossed, hairline, sandblast, brush, etching |
| Product Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA No.8, Satin (plastic coated), No.1 |
Critical Industrial Applications of Duplex 2507 Coils:
Because of its “Super” status, Duplex 2507 Coils are essential for:
- Desalination Plants : High-pressure piping and seawater cooling.
- Offshore Oil & Gas : Subsea umbilicals, heat exchangers, and firewater systems.
- Chemical Processing :Production of nitric acid and specialty organic acids.
- Pollution Control : Scrubber systems for flue gas desulfurization.
Choose Excellence:
Experience unmatched performance with Stainless Steel Duplex 2507 Coils that outperform 2205 by 50% in pitting resistance and enable 30-40% material savings through higher strength-to-weight ratios. Backed by ASTM A240 certification, full traceability, and global delivery from Chennai.
Countries We Export
Macau, Philippines, Estonia, Slovakia, India, Switzerland, France, Gambia, United States, Nepal, Iran, Australia, Thailand, Gabon, Zimbabwe, Bangladesh, Angola, Lithuania, Kuwait, Kazakhstan, Trinidad & Tobago, Puerto Rico, Singapore, Mexico, Azerbaijan, Brazil, Bulgaria, United Arab Emirates, Tibet, Greece, South Africa, Afghanistan, Sri Lanka, Italy, China, Serbia, Turkey, Mexico, Bolivia, Peru, Chile, Belarus, Yemen, Namibia, Qatar, Algeria, Libya, Nigeria, Japan, Poland, Austria, Bhutan, Nigeria, Portugal, Czech Republic, Croatia, Jordan, Hungary, Finland, Pakistan, Spain, South Korea, Ecuador, Denmark, Canada, Kenya, Saudi Arabia, Vietnam, Sweden, Malaysia, Bahrain, Costa Rica, Venezuela, Israel, Netherlands, United Kingdom, New Zealand, Russia, Morocco, Poland, Indonesia, Hong Kong, Egypt, Oman, Norway, Chile, Iran, Lebanon, Taiwan, Ghana, Romania, Mongolia, Ukraine, Colombia, Tunisia, Ireland, Iraq, Belgium, Argentina, Germany.
Cities We Supply
Calgary, Al Jubail, Hong Kong, Bhopal, Jeddah, Toronto, Ulsan, Aberdeen, Thiruvananthapuram, Petaling Jaya, Nashik, Houston, Montreal, Cairo, Ernakulam, Atyrau, Karachi, Haryana, Istanbul, Jakarta, Sharjah, Nagpur, Dallas, Ranchi, Algiers, Doha, Santiago, Geoje-si, Singapore, Chennai, Jamshedpur, Perth, New Delhi, Tehran, Vadodara, New York, Caracas, Ahmedabad, Edmonton, Kanpur, Busan, Mumbai, Secunderabad, Bengaluru, Kolkata, Pimpri-Chinchwad, Manama, Vung Tau, Melbourne, Bangkok, Colombo, Ankara, Bogota, Sydney, Milan, Port-of-Spain, Abu Dhabi, Thane, Ahvaz, Visakhapatnam, Rajkot, Jaipur, Indore, Kuwait City, Gurgaon, Baroda, Navi Mumbai, La Victoria, Surat, Ludhiana, Lahore, Hanoi, Riyadh, Faridabad, Hyderabad, Coimbatore, Mexico City, Dubai, Al Khobar, Rio de Janeiro, Pune, Chiyoda, Moscow, Lagos, London, Madrid, Granada, Ho Chi Minh City, Brisbane, Chandigarh, Seoul, Courbevoie, Los Angeles, Gimhae-si, Dammam, Howrah, Muscat, Noida, Kuala Lumpur, Pondicherry, Tamil Nadu.
