Super Duplex Stainless Steel Sheet
At Stellanox Steel, we supply high-quality Super Duplex Stainless Steel Sheets engineered to deliver ultra-high strength, outstanding corrosion resistance, and exceptional reliability for critical industrial applications.
Designed for use in extreme environments — such as offshore oil platforms, chemical plants, desalination units, and marine structures — our Super Duplex sheets provide maximum performance with cost efficiency and long service life.
What are Super Duplex Stainless Steel Sheet?
Super Duplex Stainless Steel Sheets are flat-rolled products produced from super duplex alloys such as UNS S32750 (2507) and S32760 (Zeron 100).
These sheets feature a two-phase (ferritic-austenitic) microstructure that gives them twice the strength of standard austenitic stainless steels (e.g., 304L/316L) along with superior corrosion resistance, especially in chloride-rich environments.
Super Duplex sheets are ideal where resistance to pitting, crevice corrosion, and stress corrosion cracking are critical — all while offering high fatigue strength and excellent weldability.
| Products |
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Stainless Steel |
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Carbon Steel |
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Duplex Stainless Steel |
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Super Duplex Stainless Steel |
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Alloy Steel |
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Titanium |
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Hastelloy |
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Inconel |
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Monel |
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Aluminium |
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Copper |
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Pure Nickel |
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Flanges |
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Forged Fittings |
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Valves |
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Fasteners |
Key Features of Super Duplex Stainless Steel Sheet
- Exceptional Tensile and Yield Strength: Supports thinner designs with higher load capacity.
- Outstanding Corrosion Resistance: Particularly against pitting, crevice corrosion, and chloride-induced stress corrosion.
- Excellent Fatigue and Erosion Resistance: Performs reliably under cyclic loading and abrasive conditions.
- Superior Weldability: Suitable for field fabrication with proper control of welding parameters.
- Cost-Effective Long-Term Solution: High performance at a lower total lifecycle cost than nickel alloys.
- Suitable for Aggressive Marine and Chemical Environments: Perfect for offshore, subsea, and high-chloride operations.
Super Duplex Stainless Steel Sheet Products
Super Duplex Stainless Steel Sheet
Super Duplex Stainless Steel Plate
Super Duplex Stainless Steel Pipe
Super Duplex Stainless Steel Tube
Super Duplex Stainless Steel Bar
Specification Chart –Super Duplex Stainless Steel Sheet
| Property | Details |
|---|---|
| Product | Super Duplex Stainless Steel Sheet |
| Common Grades | UNS S32750 (2507), UNS S32760 (Zeron 100) |
| Manufacturing Standards | ASTM A240, ASME SA240, EN 10088-2, JIS G4305 |
| Thickness Range | 1.5 mm to 50 mm |
| Width Range | 1000 mm to 2500 mm |
| Length Range | 2000 mm to 6000 mm (custom sizes available) |
| Surface Finish Options | 2B, No.1 (HRAP), No.4 (Brushed), BA (Bright Annealed), Mirror Finish |
| Heat Treatment | Solution Annealed and Rapidly Quenched |
| Edge Condition | Mill Edge, Slit Edge |
| Testing and Certification | EN 10204 3.1/3.2, NACE MR0175/ISO 15156, ASTM Compliance |
Chemical Composition Chart – Super Duplex Stainless Steel Sheet
| Element | Symbol | 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 | ≤ 1.2 |
| Silicon | Si | ≤ 0.8 |
| Phosphorus | P | ≤ 0.035 |
| Sulfur | S | ≤ 0.020 |
| Iron | Fe | Balance |
Mechanical Properties Chart –Super Duplex Stainless Steel Sheet
| Property | Value |
|---|---|
| Tensile Strength (MPa) | ≥ 795 |
| Yield Strength (0.2% Proof, MPa) | ≥ 550 |
| Elongation (%) | ≥ 15 |
| Hardness (Brinell HB) | ≤ 300 |
| Charpy Impact Energy (@ -46°C) | ≥ 45 Joules |
Equivalent Grades Chart – Super Duplex Stainless Steel Sheet
| Standard | Equivalent Grade |
|---|---|
| ASTM | A240 S32750 / S32760 |
| UNS | S32750 (2507), S32760 (Zeron 100) |
| EN | 1.4410, 1.4501 |
| DIN | X2CrNiMoCuWN25-7-4 |
| JIS | SUS 329J4L |
Super Duplex Stainless Steel Sheet Weight Chart (kg/m²)
| Thickness (mm) | Weight per m² (kg) | Weight per 1.25 × 2.5 m (kg) | Weight per 4' × 8' (kg) |
|---|---|---|---|
| 0.5 | 3.93 | 12.28 | 11.68 |
| 1.0 | 7.85 | 24.53 | 23.32 |
| 1.5 | 11.78 | 36.81 | 34.99 |
| 2.0 | 15.70 | 49.06 | 46.65 |
| 2.5 | 19.63 | 61.34 | 58.31 |
| 3.0 | 23.55 | 73.59 | 69.97 |
| 4.0 | 31.40 | 98.13 | 93.30 |
| 5.0 | 39.25 | 122.66 | 116.63 |
| 6.0 | 47.10 | 147.19 | 139.96 |
Applications of Super Duplex Stainless Steel Sheet in Various Industries
Stellanox Steel’s Carbon Steel products are valued for their strength, machinability, and cost-effectiveness across multiple sectors:
Oil And Gas Industry
Marine Industry
Building And Structural Steel
Power and Energy
Aerospace
Defence
Benefits of Super Duplex Stainless Steel Sheet
- Higher Strength, Lower Weight: Enables lighter, more efficient structural designs.
- Superior Resistance to Harsh Environments: Perfect for marine, offshore, and chemical exposures.
- Excellent Fabrication Properties: Good formability, weldability, and machinability.
- Lower Total Cost of Ownership: Reduced maintenance, repairs, and downtime costs.
- Sustainability: Fully recyclable and energy-efficient material choice.
Frequently Asked Questions
Explore our FAQs for insights on materials, customization, and delivery.
How does Super Duplex stainless steel sheet compare to 316L stainless steel sheet?
Super Duplex offers more than twice the strength and significantly superior corrosion resistance compared to 316L stainless steel, especially in chloride-rich environments.
Are Super Duplex sheets suitable for welding and fabrication?
Yes. They can be easily welded and fabricated, though proper heat input and filler materials should be selected to maintain microstructure balance.
What thicknesses are available for Super Duplex stainless sheets?
Our standard range is from 1.5 mm up to 50 mm thickness, with custom thicknesses available on request.
Can Super Duplex stainless steel sheets be used for architectural applications?
Yes. Due to their strength, corrosion resistance, and available surface finishes (polished, brushed, mirror), they are excellent for modern coastal and high-load architectural designs.
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2025 Stellanox Steel |