Specifications of Super Duplex 2507 Plate

Super duplex 2507 plate specifications, covering standards, forms, dimensions, finishes, and more, are provided in the table below:

Parameter Specification
Standard ASTM A240 / ASME SA240
Product Form Plate, Sheet, Coil
Thickness Range 3 mm – 150 mm
Width Range Up to 3000 mm
Length Range Up to 12000 mm
Surface Finishes No.1, 2B, BA, No.4
Forming Process Hot Rolled / Cold Rolled

Super Duplex 2507 Plate Sizes & Dimensions

Super Duplex 2507 Plate is available in many dimensional ranges to suit most project requirements. We stock standard mill sizes and also supply cut-to-size plates.

Standard Plate Thickness Range

The following standard SDSS 2507 plate thicknesses are available.

Parameter Specification
Thickness Range 3 mm – 150 mm (0.188" – 6")
Classification Note Below 3 mm classified as sheet
Standard Stock Range 6 mm – 80 mm
Availability Outside Range Available on mill order

Standard Plate Width & Length

Super duplex 2507 plate is available in the following widths and lengths.

Parameter Specification
Width Range Up to 3,000 mm (120")
Length Range Up to 12,000 mm (480")
Standard Stock Widths 1,000 mm, 1,250 mm, 1,500 mm, 2,000 mm
Custom Sizes Available on request

Super Duplex 2507 Plate Surface Finishes

Super Duplex 2507 Plate is supplied in the following 4 forms, with the solution-annealed condition being standard per ASTM A240.

  • No. 1
  • 2B
  • 2D
  • #4 (brushed)

Super Duplex 2507 Plate Price

Super Duplex 2507 Plate price in India starts from ₹600 and goes up to ₹1,500 per kg or $7–$18+ USD/kg. Final pricing depends on plate thickness, width and length, order quantity, surface finish, and any additional certification or testing requirements. Nickel and molybdenum prices directly influence raw material costs, and 2507's higher alloy content makes it more expensive than standard Duplex 2205 plate. Contact our sales team with your dimensions, quantity, and specification requirements for a current quotation.

Chemical Composition of Super Duplex 2507 Plate

The table below lists the chemical composition of Super Duplex 2507 Plate per ASTM A240. Chromium and molybdenum resist pitting and crevice attack in chloride media. Nitrogen strengthens the austenite phase while also raising the PREN value. The low-carbon content reduces the risk of intergranular corrosion in heat-affected zones after welding.

Carbon C
Max 0.030%
Manganese Mn
Max 1.20%
Phosphorus P
Max 0.035%
Sulphur S
Max 0.020%
Silicon Si
Max 0.80%
Chromium Cr
24.0 – 26.0%
Nickel Ni
6.0 – 8.0%
Molybdenum Mo
3.0 – 5.0%
Nitrogen N
0.24 – 0.32%
Iron Fe
Balance

Mechanical Properties of Super Duplex 2507 Plate

ASTM A240 Grade 2507 plate provides mechanical performance that suits structural and pressure-containing applications.

800
MPa (min)
Tensile Strength
550
MPa (min)
Yield Strength
15%
(min)
Elongation
Property Imperial Metric
Tensile Strength, min 116 ksi 800 MPa
Yield Strength (0.2% offset), min 80 ksi 550 MPa
Elongation, min 15% 15%
Request a Quote for Super Duplex 2507 Plate. Request a Quote

Equivalent Designations of Super Duplex 2507 Plates

International equivalents across various regions, including EN, UNS, and more, for SDSS 2507 plates are listed below.

Standard Designation
UNS S32750
EN 10088 1.4410 / X2CrNiMoN25-7-4
GB/T 20878 022Cr25Ni7Mo4N

Corrosion Resistance of Super Duplex 2507 Plate

Super Duplex 2507 Plate has a PREN value exceeding 40, providing outstanding resistance to chloride pitting, crevice corrosion, and stress corrosion cracking. 2 specific corrosion mechanisms relevant to plate selection are covered below.

  • Pitting & Crevice Corrosion Resistance

    Super Duplex 2507 Plate resists pitting initiation in chloride-containing solutions at temperatures well above those tolerated by austenitic grades. The critical pitting temperature (CPT) in ferric chloride testing ranges between 70–85°C, depending on product form and test conditions. Crevice corrosion resistance follows a similar pattern. The high molybdenum and nitrogen content stabilises the passive film within tight geometries.

  • Stress Corrosion Cracking Resistance

    The duplex microstructure of 2507 plate provides inherent resistance to chloride stress corrosion cracking (SCC). Austenitic stainless steels are susceptible to SCC at temperatures as low as 60 0C in concentrated chloride solutions. Alloy 2507's ferrite phase interrupts crack propagation paths, and the balanced 50/50 austenite-ferrite structure maintains this protection across a broad temperature range. This makes the plate suitable for sour service environments when supplied in solution-annealed condition, depending on hardness limits, heat treatment conditions, and application environment.

Super Duplex 2507 Plate Applications

Super Duplex 2507 Plate is specified in industries that demand high mechanical strength combined with exceptional corrosion resistance. The 4 primary application sectors are given below.

Oil & Gas Industry

2507 super duplex plate is used for subsea manifolds, topside process equipment, and pressure vessels on offshore platforms exposed to chloride-rich produced water.

Chemical Processing

Alloy 2507 plate serves in reactor vessels, heat exchangers, and piping systems handling sulphuric acid, phosphoric acid, and chloride-bearing chemical streams.

Desalination & Water Treatment

Super Duplex Steel 2507 Plate is fitted in high-pressure reverse osmosis frames, seawater intake structures, and brine handling systems where chloride concentrations are elevated.

Marine & Offshore Structures

The plate is specified for structural members, splash-zone cladding, and firewater system components on marine platforms and coastal installations.

Super Duplex 2507 Plate vs Duplex 2205 Plate

Super Duplex 2507 Plate and Duplex 2205 Plate are the two most specified duplex stainless steel plate grades. The comparison below shows the key differences between Super Duplex 2507 plate and Duplex 2205 plate.

Property Super Duplex 2507 (UNS S32750) Duplex 2205 (UNS S31803)
UNS Designation S32750 S31803 / S32205
EN Designation 1.4410 1.4462
Chromium (%) 24.0 to 26.0 22.0 to 23.0
Molybdenum (%) 3.0 to 5.0 3.0 to 3.5
Yield Strength, min 80 ksi (550 MPa) 65 ksi (450 MPa)
Tensile Strength, min 116 ksi (800 MPa) 90 ksi (620 MPa)
PREN >40 ~35
Chloride SCC Resistance Superior Good

Shipping & Packaging

Main export packaging setup Heavy-duty wooden boxes Packing
Export Packaging Standard

We strictly follow seaworthy export handling standards to protect super duplex 2507 plate from transit damage, moisture ingress, and surface contamination during long-distance dispatch.

  • Heavy-duty wooden boxes with moisture barrier lining
  • HDPE stretch film wrapping on all bundles
  • Edge and corner protection with plastic padding
  • Silica gel desiccants to minimize moisture exposure
  • ISPM-15 fumigated wooden packaging for export
shipping preparation Plate Bundle Yard Staging
Shipping packaging Plate Bundle Edge Protection
Shipping stock Wrapped Export-Ready Bundles

We Export Worldwide

Sachiya Steel International supplies super duplex steel products to major industrial markets across North America, Europe, the Middle East, Asia and Africa with export-ready documentation and logistics support.

  • USA flagUSA
  • Canada flagCanada

Frequently Asked Questions:

What are the standard sizes available for Super Duplex 2507 Plate? +
Super Duplex 2507 Plate come in thicknesses from 3 mm to 150 mm, widths up to 3,000 mm, and lengths up to 12,000 mm. Custom dimensions are available on request.
What is the difference between Super Duplex 2507 Plate and Duplex 2205 Plate? +
2507 Plate has a higher yield strength (80 ksi vs 65 ksi), superior pitting resistance with a PREN exceeding 40 (vs 35), and better chloride stress corrosion cracking resistance. The higher alloy content of 2507 makes it the preferred choice for aggressive chloride environments.
What ASTM standard covers Super Duplex 2507 Plate? +
Super Duplex 2507 Plate is covered by ASTM A240 / ASME SA-240 under the UNS designation S32750. ASTM A480 / ASME SA-480 governs the general requirements for flat-rolled plate.
Is Super Duplex 2507 Plate suitable for sour service? +
Yes. Super Duplex 2507 Plate can comply with NACE MR0175 / ISO 15156 for sour service applications when supplied in the solution-annealed condition. We provide full material test certificates.
What is the maximum service temperature for Super Duplex 2507 Plate? +
The recommended maximum service temperature is 316 0C (600 0F). Extended exposure above this can lead to sigma phase formation. This reduces both toughness and corrosion resistance over time.
Can Super Duplex 2507 Plate be welded? +
Yes. The 2507 plate is weldable using standard methods, including GTAW, GMAW, and SMAW. Recommended filler metals are ER2594 and E2594. Post-weld solution annealing may be needed depending on service conditions, and heat input should be controlled to maintain the proper austenite-ferrite balance.
What is the price of Super Duplex 2507 Plate? +
Super Duplex 2507 Plate price starts from ₹600 and goes up to ₹1,500 per kg or $7-$18+ USD/kg. The final price varies with thickness, dimensions, quantity, finish, certification requirements, and current raw material market rates. Contact us with your project details for a competitive quotation.
What is the PREN value of Super Duplex 2507 Plate? +
Super Duplex 2507 has a PREN exceeding 40. It is calculated as %Cr + 3.3(%Mo) + 16(%N). A PREN above 40 indicates excellent resistance to pitting and crevice corrosion in chloride-containing environments.

Contact Us for Availability & Current Pricing. Request a Quote