Welcome to Salem Stainless Steel Suppliers Pvt. Ltd., your premier source for high-performance super-duplex alloys. When your industrial applications push beyond the limits of standard stainless steel, you need a material engineered for the most aggressive environments on Earth. Our Stainless Steel Duplex 2507 Flanges represent the pinnacle of strength and corrosion resistance.
Also known as Super Duplex, Grade 2507 (UNS S32750) is designed specifically for highly corrosive conditions, such as seawater and chemical process environments. The exceptional nature of SS Duplex 2507 Flanges is defined by its high alloy content, which includes significant levels of Chromium, Molybdenum, and Nitrogen. This super-austenitic/ferritic microstructure provides a Pitting Resistance Equivalent Number (PREn) of ≥40, placing it in the “Super” category of duplex steels.
Chemical Properties of SS Duplex 2507 Flanges:
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.030 |
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 6.0 – 8.0 |
| Molybdenum (Mo) | 3.0 – 5.0 |
| Nitrogen (N) | 0.24 – 0.32 |
| Manganese (Mn) | ≤ 1.20 |
| Silicon (Si) | ≤ 0.80 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.020 |
| Copper (Cu) | ≤ 0.50 |
| Iron (Fe) | Balance |
Mechanical Properties of Stainless Steel Duplex 2507 Flanges:
| Property | Typical Value |
|---|---|
| Tensile Strength | 800 MPa min |
| Yield Strength (0.2%) | 550 MPa min |
| Elongation | 25% min (in 50 mm) |
| Hardness (Rockwell C) | ≤32 HRC max |
Physical Properties of Duplex 2507 SS Flanges:
| Property | Value |
|---|---|
| Density | 7.80-7.81 g/cm³ |
| Melting Range | 1420-1465°C |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 18 W/m·K |
| Thermal Expansion | 13.4 × 10⁻⁶ /K |
| Heat Capacity | 475 J/kg·K |
Product Specifications:
| Property | Details |
|---|---|
| Product | Stainless Steel Duplex 2507 Flanges |
| Shape | Round |
| Surface | Polished |
| Min. Order Quantity | 200 Kgs |
Primary Applications of Duplex 2507 Flanges:
- Offshore Oil & Gas: Subsea manifolds, risers, and topside piping.
- Desalination Plants: High-pressure reverse osmosis (RO) systems and brine handling.
- Chemical Processing: Handling high concentrations of organic and inorganic acids.
- Marine Engineering: Coastal defense structures, propulsion systems, and rudders.
- Pollution Control: Flue gas desulfurization (FGD) systems.
Ready to equip your systems with the strongest and most corrosion-resistant Stainless Steel Duplex 2507 Flanges available? Contact Salem Stainless Steel Suppliers Pvt. Ltd. now for a free quotation, stock availability, or custom specifications.
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