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Quality Super Duplex 2507 Stainless Steel Plate Sheet UNS S32750 High Strength Corrosion Resistant factory
Quality Super Duplex 2507 Stainless Steel Plate Sheet UNS S32750 High Strength Corrosion Resistant factory

Super Duplex 2507 Stainless Steel Plate Sheet UNS S32750 High Strength Corrosion Resistant

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
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Duplex 2507 Stainless Steel Plate

2507 Stainless Steel Plate Corrosion Resistant

Stainless Steel Plate Sheet UNS S32750
Product Summary
Super Duplex 2507 (UNS S32750) sheets represent the highest level of duplex stainless steel technology, offering an exceptional combination of mechanical strength and corrosion resistance. This advanced material is specifically engineered for service in the most demanding environments, including ...

Product Details

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Duplex 2507 Stainless Steel Plate

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2507 Stainless Steel Plate Corrosion Resistant

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Stainless Steel Plate Sheet UNS S32750
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

Super Duplex 2507 (UNS S32750) sheets represent the highest level of duplex stainless steel technology, offering an exceptional combination of mechanical strength and corrosion resistance. This advanced material is specifically engineered for service in the most demanding environments, including high-chloride seawater, acid chloride media, and sour gas applications.

The designation "Super Duplex" refers to the premium grade of duplex stainless steel with a Pitting Resistance Equivalent Number (PREN) exceeding 40. UNS S32750 achieves this through a carefully balanced chemistry featuring high levels of chromium (24-26%), molybdenum (3-5%), and nitrogen (0.24-0.32%). The result is a material that significantly outperforms standard duplex grades like 2205 and conventional austenitic grades such as 316L.

Product Parameters
Parameter Details
Product Name Super Duplex 2507 Sheets
UNS Number S32750
EN Equivalent 1.4410
Trade Name SAF 2507 (equivalent)
Standard ASTM A240 / ASME SA-240
Form Sheet, Plate, Coil
Manufacturing Process Hot rolled or cold rolled, solution annealed + water quenched
Thickness Range 0.5mm – 6.0mm (sheet) / 6.0mm – 50mm (plate)
Width Range 500mm – 2000mm
Length Range 1000mm – 6000mm
Surface Finish 2B (bright cold rolled), 2D (dull), No.1 (annealed & pickled), BA (bright annealed)
Packing Method Waterproof paper interleaved between layers, wooden pallets, rust-preventive oil (optional), edge protectors, steel strapping
Edge Condition Mill edge or slit edge
Certification Mill Test Certificate EN 10204 Type 3.1 (or Type 3.2 upon request)
Third-Party Inspection SGS, Bureau Veritas, and Intertek are available
Chemical Composition (ASTM A240 UNS S32750)

The chemical composition of Super Duplex 2507 is strictly controlled to achieve the required phase balance and corrosion resistance. Below are the requirements per ASTM A240:

Element Content (% by weight)
Carbon (C) 0.030 max
Manganese (Mn) 1.20 max
Silicon (Si) 0.80 max
Phosphorus (P) 0.035 max
Sulfur (S) 0.020 max
Chromium (Cr) 24.00 – 26.00
Nickel (Ni) 6.00 – 8.00
Molybdenum (Mo) 3.00 – 5.00
Nitrogen (N) 0.24 – 0.32
Copper (Cu) 0.50 max

PRE (Pitting Resistance Equivalent) Calculation: PRE = Cr% + 3.3(Mo% + 0.5W%) + 16N%

For UNS S32750, the PRE value typically exceeds 40, indicating excellent resistance to pitting and crevice corrosion in chloride environments.

Mechanical Properties (Solution Annealed Condition)

After proper solution annealing and water quenching, Super Duplex 2507 sheets deliver the following mechanical properties:

Property Required Value (Typical)
Tensile Strength 800 MPa (116 ksi) min
Yield Strength (0.2% offset) 550 MPa (80 ksi) min
Elongation (2" or 50mm) 25% min
Hardness (Brinell) 310 HBW max
Hardness (Rockwell C) 32 HRC max
Charpy V-Notch Impact (Longitudinal) 100 J min at -20°C
Charpy V-Notch Impact (Transverse) 45 J min at -20°C
Modulus of Elasticity 200 GPa (29,000 ksi)
Density 7.8 g/cm³ (0.28 lb/in³)

Comparison of strength levels:

Material Yield Strength (min) Relative Strength
304 Stainless Steel 205 MPa 1.0x
316L Stainless Steel 205 MPa 1.0x
2205 Duplex 450 MPa 2.2x
Super Duplex 2507 550 MPa 2.7x
Applications

Super Duplex 2507 sheets are specified for demanding applications across multiple industries where high strength and exceptional corrosion resistance are required.

Offshore and Marine

  • Seawater cooling systems and firewater lines

  • Offshore platform topside equipment

  • Desalination plant evaporators and piping

  • Ballast water treatment systems

  • Hydraulic and instrumentation systems

  • Subsea manifolds and jumpers

The high PREN value (>40) ensures reliable performance in seawater, even in crevice conditions, stagnant flow, or high-velocity applications.

Chemical Processing

  • Heat exchangers handling chloride-containing cooling water

  • Chemical tankers and storage vessels

  • Evaporators, crystallizers, and reactors

  • Flue Gas Desulfurization (FGD) components

  • Process piping for organic and inorganic acids

  • Bleaching equipment in pulp and paper mills

UNS S32750 resists pitting, crevice corrosion, and stress corrosion cracking, where 316L and even 2205 duplex would experience premature failure.

Oil and Gas

  • Process equipment on offshore platforms and FPSOs

  • Sour service components (NACE MR0175 / ISO 15156 compliant)

  • High-pressure flowlines and manifolds

  • Separation and treatment vessels

  • Subsea Christmas trees and wellhead equipment

Power Generation

  • Seawater-cooled condensers and heat exchangers

  • Cooling water intake systems

  • FGD absorber towers and ductwork

  • Geothermal power plant equipment

Pulp and Paper

  • Bleaching plant digesters and towers

  • Chlorine dioxide bleaching systems

  • White liquor and green liquor tanks

  • Washers and filters

Architectural and Structural

  • High-performance building facades in coastal locations

  • Bridge components exposed to de-icing salts

  • Marine architectural features and fittings

Ordering Information

When placing an order for Super Duplex 2507 (UNS S32750) sheets, please specify the following to ensure accurate quotation and delivery:

  1. Quantity – Number of sheets or total weight (metric tons)

  2. Dimensions – Thickness × Width × Length (mm or inches)

  3. Surface Finish – 2B, 2D, No.1, BA, or custom

  4. Edge Condition – Mill edge or slit edge

  5. Certification Requirements – EN 10204 Type 3.1 or Type 3.2

  6. Third-Party Inspection – SGS, BV, Intertek, or as specified

  7. Supplementary Requirements – Ferrite measurement, ultrasonic testing, intergranular corrosion test, etc.

  8. Packing Preference – Standard export packing or custom requirement

Contact Us

For inquiries, technical data sheets, material selection assistance, or a quotation for Super Duplex 2507 (UNS S32750) corrosion-resistant high-strength sheets, please contact our sales team.

We provide:

  • Mill test certificates with full traceability to heat numbers

  • Competitive pricing for project quantities and regular stocking orders

  • Reliable delivery to global destinations

  • Technical support from material selection through fabrication

All inquiries are responded to within 24 hours.

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