ASTM A240 / ASME SA240 S32760 Super Duplex Steel Plate | UNS S32760 Sheet | EN 1.4501 Plate Supplier
Professional Supplier of ASTM A240 S32760 Super Duplex Stainless Steel Plate
We are a professional manufacturer and exporter of ASTM A240 / ASME SA240 S32760 super duplex stainless steel plates and sheets, supplying high-performance corrosion-resistant materials for offshore, oil & gas, petrochemical, marine, and pressure vessel applications worldwide.
Our product range includes:
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ASTM A240 S32760 Plate
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ASME SA240 S32760 Sheet
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UNS S32760 Stainless Steel Plate
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EN 1.4501 Plate
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X2CrNiMoCuWN25-7-4 Super Duplex Steel
Product Overview
ASTM A240 / ASME SA240 S32760 Super Duplex Stainless Steel Plate is a high-alloy duplex stainless steel specifically designed for aggressive chloride-containing environments.
UNS S32760, also known as Alloy 32760, is similar to S32750 but enhanced with tungsten (W) and copper (Cu) additions. These elements significantly improve localized corrosion resistance and stress corrosion cracking performance.
With a PREN ≥ 40, S32760 provides superior resistance to:
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Pitting corrosion
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Crevice corrosion
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Chloride stress corrosion cracking
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Seawater corrosion
This material combines the best properties of austenitic and ferritic stainless steels, delivering both high strength and excellent corrosion resistance.
EN 1.4501 (X2CrNiMoCuWN25-7-4) Stainless Steel
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EN Numeric Designation: 1.4501
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EN Chemical Name: X2CrNiMoCuWN25-7-4
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UNS Equivalent: S32760
EN 1.4501 is the European equivalent of UNS S32760 and is supplied in the solution annealed condition (AT). It is primarily used for wrought products such as plates and sheets.
The alloy is approved for:
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NACE MR0175 / ISO 15156 (Sour Service)
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ASME pressure vessel applications
Applicable Standards
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Plate & Sheet Standard: ASTM A240 / ASME SA240
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UNS Designation: S32760
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EN Equivalent: 1.4501
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Inspection Standard: ASTM A480
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Testing Standard: ASTM A370
ASTM A240 covers chromium and chromium-nickel stainless steel plates, sheets, and strips for pressure vessels and general applications.
Product Forms
We supply:
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Super Duplex Steel Plate
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Super Duplex Steel Sheet
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Hot Rolled Plate (HR)
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Cold Rolled Sheet (CR)
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Cut-to-Size Plates
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Polished Sheets
Surface finishes available:
Mill Finish, No.1, 2B, 2D, No.4, No.8, Mirror, Brush, Hairline
Size Range
Plate Thickness: 3 mm – 100 mm
Sheet Thickness: 0.5 mm – 6 mm
Width: 1000 mm – 2500 mm
Length: 2000 mm – 12000 mm
Custom sizes available upon request.
Chemical Composition of ASTM A240 UNS S32760
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.05 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.010 |
| Chromium (Cr) | 24.00 – 26.00 |
| Molybdenum (Mo) | 3.00 – 4.00 |
| Nickel (Ni) | 6.00 – 8.00 |
| Nitrogen (N) | 0.20 – 0.30 |
| Iron (Fe) | Balance |
PREN Formula:
PREN = %Cr + 3.3(%Mo) + 16(%N) ≥ 40
High PREN ensures excellent resistance to localized corrosion.
Mechanical Properties of S32760
| Property | Typical Value |
|---|---|
| Density | 7.8 g/cm³ |
| Melting Point | 1350°C |
| Tensile Strength | ≥ 750 MPa |
| Yield Strength (0.2%) | ≥ 550 MPa |
| Elongation | ≥ 25% |
| Hardness | ≤ 270 HB |
S32760 offers nearly twice the yield strength of conventional austenitic grades like 304 and 316.
Testing Requirements
All ASTM A240 S32760 plates and sheets undergo strict quality control procedures:
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Chemical Analysis
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Mechanical Testing
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Hardness Testing
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Impact Testing (Low Temperature)
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Ultrasonic Testing (UT)
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PMI (Positive Material Identification)
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Corrosion Testing (if required)
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Intergranular Corrosion Test (ASTM A262 Practice E)
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NACE MR0175 compliance (if required)
Certification:
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EN 10204 3.1 / 3.2 MTC
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Third-party inspection available (SGS, BV, TUV, DNV)
Key Advantages of UNS S32760 Super Duplex Steel Plate
✔ PREN ≥ 40 for superior pitting resistance
✔ Excellent chloride stress corrosion cracking resistance
✔ High mechanical strength
✔ Approved for sour service
✔ Suitable for pressure vessels
✔ Long service life in seawater and offshore environments
Applications
ASTM A240 S32760 super duplex stainless steel plates are widely used in:
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Offshore Oil & Gas Platforms
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Subsea Equipment
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Heat Exchangers
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Desalination Plants
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Chemical Processing Equipment
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Pressure Vessels
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Marine Engineering
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LNG Systems
