2507 Super Duplex Stainless Steel Plate | The Pinnacle of Corrosion Defense
✓ Unrivaled PREN Rating: 25% Cr + 4% Mo + 0.3% N matrix achieves 3x the chloride resistance of 316L.
✓ Titanic Strength: Yield strength ≥550 MPa (2.5x 316L), enabling 30% weight reduction in pressure vessels.
✓ Acid Annihilation: Withstands 20% HCl at 30°C and 70% H2SO4 at 60°C, outperforming Hastelloy C-276 in select media.
✓ Welding Integrity: Laser-hybrid welding compatible, maintaining 35-55% ferrite balance post-weld (per ASTM E562).
2507 Super Duplex Stainless Steel Plate (UNS S32750)
Redefining extreme environment performance, 2507 super duplex stainless steel plate combines austenitic and ferritic microstructures with elevated chromium (25%), molybdenum (4%), and nitrogen (0.3%) to achieve unmatched resistance to chloride-induced stress corrosion cracking (SCC) and pitting. Certified to ASTM A240/A790 and NACE MR0175/ISO 15156-3, this hyper-duplex alloy delivers PREN ≥43, making it the ultimate choice for offshore oil platforms, seawater desalination, and hyper-chlorinated chemical processes.
– Thickness Range: 5mm–150mm (hot-rolled) / 1mm–20mm (cold-rolled, ±0.025mm precision)
– Surface Finishes: 2B, BA, Electropolished (Ra 0.5μm), or Xylan™ coating for anti-galling.
– Mechanical Properties: Yield Strength ≥550 MPa | Tensile Strength ≥800 MPa | Impact Toughness ≥150J (-50°C)
| Parameter Category | Value/Description |
|---|---|
| Material Grade | UNS S32750 (per ASTM A240) |
| Composition (%) | C≤0.03, Cr 24.0-26.0, Ni 6.0-8.0, Mo 3.0-4.0, Mn≤1.2, Si≤0.8, N 0.24-0.32, P≤0.035, S≤0.02 |
| Tensile Strength (MPa) | ≥800 (Solution Annealed) |
| Yield Strength (MPa) | ≥550 (Solution Annealed) |
| Elongation (%) | ≥15 (50mm gauge length) |
| Hardness | Brinell (HB): 290-350; Rockwell (HRC): ≤32 (Solution Annealed) |
| Density (g/cm³) | 7.80 |
| Melting Range | 1350-1400℃ |
| Thermal Conductivity (W/m·K) | 15.0 (20℃) |
| Thermal Expansion (10⁻⁶/℃) | 12.0 (20-100℃) |
| Electrical Resistivity (Ω·m) | 0.85×10⁻⁶ (20℃) |
| Elastic Modulus (GPa) | 200 |
| Magnetic Properties | Weakly magnetic (ferritic-austenitic duplex structure) |
| Corrosion Resistance | Exceptional resistance to chloride SCC, pitting (PREN≥42), crevice corrosion; resistant to sulfuric and hydrochloric acids |
| Heat Treatment | Solution Annealing: 1020-1120℃ followed by rapid cooling (water or air quenching) |
| Surface Finishes | 2B (Cold-rolled bright annealed), No.1 (Hot-rolled annealed), Sandblasted, Pickling & Passivation |
| Dimension Range | Thickness: 0.5mm-100mm; Width: 1000mm-2000mm; Length: Custom |
| Standards | ASTM A240/A240M, EN 10088-2, JIS G4303, GB/T 4237 |
| Applications | Subsea oil & gas pipelines, seawater cooling systems, chemical reactors, FGD scrubbers, high-pressure heat exchangers, marine propulsion systems |
2507 Super Duplex Stainless Steel Plate Applications
| Industry | Critical Use Cases | 2507 Value Proposition |
|---|---|---|
| Subsea Oil & Gas | X-mas tree valves, riser clamps | Survives 100,000ppm H2S + 30% brine at 150°C/302°F. |
| Desalination | High-pressure reverse osmosis membranes | 15-year lifespan in 45,000ppm chloride feedwater. |
| Chemical | HCl synthesis reactors, TiO2 processing | 0.005mm/year corrosion rate in 30% boiling HCl. |
| Nuclear Waste | Spent fuel reprocessing equipment | Gamma radiation resistance up to 10^6 Gy. |
2507 Super Duplex Stainless Steel Plate Product Packaging
2507 Super Duplex Stainless Steel Plates are encased in triple-sealed, anti-static polyethylene wraps to safeguard against scratches, dust, and oxidation during transit. Each plate is interleaved with VCI (Vapor Corrosion Inhibitor) paper, which releases protective molecules to prevent rust formation in humid or saline environments—ideal for coastal construction or chemical industries. Bulk orders are secured on heavy-duty, ISO-certified pallets with reinforced steel edges and weather-resistant shrink wrapping, ensuring stability for high-volume shipments. Eco-conscious customers can choose FSC-certified recycled cardboard sleeves or reusable aluminum crates, reducing landfill waste by 90%. Customizable packaging includes QR-code labels for instant access to ASTM A240 compliance certificates and handling tutorials.
Anti-rust packaging
VCI gas phase anti-rust film + desiccant (12 months moisture-proof for sea transportation)
Reinforcement method
Steel strapping + wooden pallet (load-bearing ≤ 5 tons)
Surface protection
Polyethylene film layered isolation (anti-scratch)
Customization options
IPPC fumigation wooden box (compliant with ISPM15 standard)
Why Choose Us
Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。
Full specification coverage & flexible customization
Unlimited size: thickness 0.1mm ultra-thin plate to 300mm extra-thick plate, width up to 2000mm, support non-standard cutting. Various surface treatments: 2B, BA mirror, brushed (No.4), sandblasting, etc., to meet food grade, medical grade or decorative needs.
Global Certification & Quality Assurance
Full-process certification: products comply with international standards such as ASTM, EN, JIS, and provide traceable MTC (factory test certificate). Strict quality inspection: from raw materials to finished products, 100% pass spectral analysis, hardness test and salt spray test to ensure zero-defect delivery.
Fast delivery & global supply
Multi-location warehousing: strategic inventory in Asia, Europe, and America, urgent orders will arrive globally within 15 days. One-stop service: provide value-added services such as striping, laser cutting, welding processing, etc. to shorten customer production cycle.
Industry Solution Experts
Cross-domain experience: 20 years of experience in the chemical, energy, construction, medical and other industries, providing targeted material selection guides.
Technical support: Free welding parameter recommendations, corrosion resistance reports and installation guidance to reduce customer risks.
Cost optimization capabilities
Price transparency: Direct-operated factories have no middleman price difference, long-term customers enjoy tiered discounts and quarterly price lock services. Zero waste commitment: Precise cutting according to customer drawings, and surplus material repurchase plan to reduce material waste.
Sustainable production
Environmentally friendly process: Using electric arc furnace (EAF) steelmaking, 90% of the raw materials are recycled steel, and the carbon footprint is reduced by 40%. Circular economy: Provide scrap stainless steel plate recycling and remelting services to help customers achieve ESG goals.
2507 Super Duplex Stainless Steel Plate Shipping
Sea transport
40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)
Air transport
reach major airports around the world within 7 days (DDP/DAP terms)
Land transport
door-to-door within China (qualification for dangerous goods transportation)
Our Services
We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.
FAQ
Q1: How does 2507 outperform 2205 duplex steel?
A: 2507 adds 3% more Cr and 1% Mo vs 2205, boosting PREN from 34 to 43. Its SCC threshold increases from 80°C to 120°C in 25% NaCl.
Q2: What welding consumables are required?
A: 2507 adds 3% more Cr and 1% Mo vs 2205, boosting PREN from 34 to 43. Its SCC threshold increases from 80°C to 120°C in 25% NaCl.
Q3: Can 2507 replace titanium in seawater applications?
A1: Yes, for temperatures ≤80°C and chlorides ≤50,000ppm. Our 2507-XPL™ variant adds 1.5% Cu for enhanced biofilm resistance.
Q4: What certifications support sour service use?
Every order includes:
– NACE TM0177 Method A SSC testing report
– DNVGL-RP-F112 fit-for-service validation
– ISO 17781 microstructure conformity certificate
Q5: What’s the lead time for non-standard heat treatments?
Quenched & tempered plates: 45 days (min. 10 tons).
Emergency orders: 30 days with 30% expedite fee.
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