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Duplex Stainless Steel Mesh
Duplex stainless steel mesh is a high-performance wire mesh made from austenitic-ferritic (duplex) stainless steel that is twice as strong as standard austenitic stainless steels (such as 304/316) and offers superior corrosion resistance. The most common stainless steel grades are 2205 (UNS S32205/S31803) and 2507 (UNS S32750, “Super Duplex”).
Duplex vs 316L vs Super Duplex Stainless Steel – Comparison Table
| Property | Duplex 2205 | 316L Stainless Steel | Super Duplex 2507 |
|---|---|---|---|
| Yield Strength | 450–550 MPa | 170–300 MPa | 550–600 MPa |
| PREN (Pitting Resistance Equivalent Number) | ≥35 | ~26 | ≥40 |
| Chloride Resistance | Excellent | Good | Superior |
| Relative Cost | Moderate | Low | High |
Note: The above parameters can be optimized and customized according to working conditions.
Common Grades of Duplex Stainless Steel Mesh
1.Duplex 2205 (UNS S32205 / S31803)
– 22% Cr, 5% Ni, 3% Mo, 0.17% N
– Best for: Offshore oil & gas, chemical processing, desalination.
2.Super Duplex 2507 (UNS S32750)
– 25% Cr, 7% Ni, 4% Mo, 0.28% N
– Best for: Extreme chloride environments (seawater, acidic chemicals).
3.Lean Duplex (e.g., 2101, 2304)
– Lower nickel/molybdenum → Cost-saving alternative where extreme corrosion resistance isn’t needed.
Weave Types & Specifications:
Duplex mesh comes in multiple weave patterns for different applications:
1.Plain Weave (Most Common)
– Balanced grid for filtration, sieving, and structural reinforcement.
– Mesh Sizes: 0.2 to 200 mesh (openings from ~10mm to 0.075mm).
2.Twilled Weave
– Stronger, tighter weave for high-pressure filtration (e.g., oil & gas).
3.Dutch Weave (Fine Micron Filtration)
– Ultra-fine mesh for filtering small particles in aggressive media.
Product Features and Benefits
- Higher strength (yield strength is twice that of 316L) → Longer service life in harsh environments.
- Excellent corrosion resistance → Resistant to pitting, crevice corrosion, and chloride stress corrosion cracking (SCC).
- Good weldability and formability → Suitable for complex industrial designs.
- Cost-effective compared to nickel alloys → Less expensive than Hastelloy, yet performs well in harsh conditions.
Top Applications of Duplex Stainless Steel Mesh
Oil & Gas Industry
– Offshore platform filters, seawater intake screens, pipe protection.
– Resists H₂S (sour gas) and chloride corrosion.
Chemical & Petrochemical
– Acid filtration, reactor screens, heat exchanger components.
Desalination & Marine
– Reverse osmosis filters, shipbuilding, coastal infrastructure.
Power Plants & Nuclear
– Flue gas scrubbers, cooling water filtration.
Food & Pharma
– Hygienic, corrosion-resistant filters for CIP (clean-in-place) systems.
Architectural & Security
– Decorative panels, blast-resistant barriers (high strength).
FAQ
We support customization of various specifications such as wire diameter, mesh size, width, and roll length, and can recommend the most suitable solution based on customer drawings or application scenarios.
Yes. 304 is suitable for general acid and alkaline environments, and 316 is suitable for highly corrosive environments such as seawater and chemical media.
Yes. Our products are available in food-grade stainless steel and can be supplied with material test reports and certificates of compliance.
We support global shipments, have many years of export experience, and are familiar with the import and export standards of the European, American, Southeast Asian, and Middle Eastern markets.
Of course. Our technical team can provide professional selection suggestions and sample support based on your application.
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