Reliable Steel Distributors

Some environments are too aggressive for standard stainless. Too salty. Too acidic. Too pressurized. That’s where Super Duplex Sheets come in designed for jobs that are anything but ordinary.

Made from a higher-alloy version of duplex stainless, Super Duplex offers excellent resistance to pitting, crevice corrosion, and stress cracking especially in chloride-heavy conditions like offshore oil rigs, chemical plants, and desalination facilities.

At RSD, we supply Super Duplex Sheets that don’t just meet industry standards – they stand up to them.

What Makes It “Super”?

It’s not a buzzword – it’s a science upgrade. Super Duplex contains higher levels of chromium, molybdenum, and nitrogen than standard duplex, giving it a PREN (Pitting Resistance Equivalent Number) above 40. Translation? It holds up in the kinds of corrosive conditions that chew through regular stainless.

It’s stronger. It’s more corrosion-resistant. It lasts longer.
And in the right application, it pays for itself many times over.

Grades & Specs We Offer

• Available Grades:
  
  
  • UNS S32750
    
    
  • UNS S32760
    
    
• Thickness: 0.6 mm – 60 mm
  
  
• Widths: Up to 2500 mm
  
  
• Standards: ASTM A240, ASTM A789
  
  
• Finishes: No.1, 2B, HRAP, pickled & annealed
  
  
• Custom Cutting: Yes—sheared, waterjet, or laser cut to spec
  
  

Why Engineers Choose Super Duplex

Next-Level Corrosion Resistance:
With its high alloy content, Super Duplex performs where others fail especially in brine, seawater, and chemical-heavy flow systems.

Double the Strength:
Compared to austenitic stainless steel (like 316), it has nearly twice the tensile strength meaning lighter constructions, reduced weight, and lower material cost in the long run.

Thermal + Mechanical Stability:
Super Duplex stays stable under high mechanical loads and fluctuating temperatures – no cracking, no fatigue.

 Weldable & Workable:
Yes, it’s strong. But it’s still surprisingly easy to work with—especially when fabricated by teams familiar with duplex-grade welding protocols.

Where Super Duplex Sheets Are Used

• Offshore Oil & Gas:
  Riser pipes, subsea systems, platforms, and structural parts facing constant chloride attack.
  
  
• Desalination Plants:
  High-pressure brine pumps, RO systems, and saltwater circulation tanks.
  
  
• Chemical Processing:
  Acid reactors, caustic scrubbers, and pipelines that run 24/7 with aggressive media.
  
  
• Power Generation:
  Condensers, feedwater systems, and flue gas ducts in both thermal and nuclear plants.
  
  
• Mining & Pulp Industry:
  Equipment exposed to abrasion, acidic leaching, and erosive slurry.
  
  

Why Super Duplex from RSD?

Tested & Traceable:
Every sheet comes with Mill Test Certificates, third-party test results (on request), and full heat/lot traceability.

Cut to Fit, Not Just to Size:
We offer sheet cutting, edge prep, and ready-to-fabricate surfaces for a smooth transition into your production line.

Global-Ready Logistics:
Need it in UAE, Singapore, or Europe? We pack it export-ready with protective layering and paperwork sorted.

Real People, Real Advice:
Tell us your application, your budget, your corrosion risk—we’ll tell you if Super Duplex is the right choice (or when it’s overkill).