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2507 Super Duplex Stainless Steel Mesh
Key Features:
- Great resistance to general corrosion
- Excellently high mechanical strength and functional stability
- Mesh Size: 0.2mesh/inch to 300mesh/inch
- Wire Dia: 0.03mm to 8.0mm
Product Description:
2507 super duplex stainless steel mesh (UNS S32750) is a high-strength, ultra-corrosion-resistant wire mesh designed for the most demanding environments, including offshore, chemical processing, and desalination. It offers superior performance over standard duplex 2205 and austenitic steels (316L).
🔹 Key Properties of 2507 Super Duplex Stainless Steel Mesh:
| Property | Value | Advantage Over 316L/Duplex 2205 |
| Composition | 25% Cr, 7% Ni, 4% Mo, 0.3% N | Higher pitting/crevice resistance |
| Tensile Strength | 800-1000 MPa | 2x stronger than 316L |
| Yield Strength | 550-600 MPa | 3x higher than 316L |
| Pitting Resistance (PREN) | ≥42 | Better than 2205 (PREN ~35) |
| Corrosion Resistance | Excellent in chlorides, acids, H₂S | Outperforms 316L in sour gas/seawater |
| Max Temperature | Up to 300°C (572°F) | Similar to 2205, but stronger |
🔹 Weave Types & Specifications:
- Plain Weave (Most Common)
– Balanced grid for filtration, sieving, and structural use.
– Mesh Sizes: 1 to 200 mesh.
– Wire Diameters: 0.05mm to 5mm.
- Twilled Weave
– Stronger, denser for high-pressure filtration (oil/gas, chemical).
- Dutch Weave (Micron Filtration)
– Ultra-fine for desalination, fuel, and chemical filtration.
- Welded Mesh (Structural Applications)
– Used in offshore platforms, architectural facades, and security screens.
🔹 Top Applications of 2507 Super Duplex Mesh：
✅ Oil & Gas (Extreme Environments)
– Subsea pipelines, well screens, sour gas (H₂S) filtration – resists sulfide stress cracking.
✅ Desalination & Marine
– Seawater reverse osmosis (RO) filters, shipbuilding – superior chloride resistance.
✅ Chemical & Petrochemical
– HCl, sulfuric acid filtration, reactor screens – handles aggressive chemicals.
✅ Power & Nuclear
– Cooling systems, flue gas scrubbers – withstands high temps + corrosion.
✅ Architectural & Security
– Blast-resistant panels, coastal facades – high strength + aesthetics.
🔹 Comparison: 2507 vs. 2205 vs. 316L:
| Feature | 2507 (Super Duplex) | 2205 (Duplex) | 316L (Austenitic) |
| Strength | ⭐⭐⭐⭐⭐ (Highest) | ⭐⭐⭐⭐ | ⭐⭐ |
| Chloride Resistance | ⭐⭐⭐⭐⭐ (Best) | ⭐⭐⭐⭐ | ⭐⭐ |
| Cost | $$$$ | $$$ | $ |
| Weldability | Good (needs expertise) | Good | Excellent |
✔ Choose 2507 when:
– Extreme chloride/sour gas exposure (e.g., offshore, desalination).
– Higher strength is needed (e.g., structural mesh in corrosive environments).
🔹 Limitations of 2507 Super Duplex Mesh：
❌ Expensive (~2x the cost of 2205, ~4x 316L).
❌ Requires skilled welding (improper heat treatment can reduce corrosion resistance).
❌ Not for temps >300°C (risk of embrittlement).
