Sandvik SAF 2507

Sandvik SAF 2507 Plate, Sheet and Coil Product Information -:- For detailed product information, please contact sales. -: Sandvik SAF 2507 Plate, Sheet and Coil Synonyms -:- For detailed product information, please contact sales. -:

Sandvik SAF 2507 Plate, Sheet and Coil Product Information -:- For detailed product information, please contact sales. -: # **Product Name: Sandvik SAF 2507 Plate, Sheet and Coil (UNS S32750 / EN 1.4410)** ## **Introduction** Sandvik SAF 2507 in Plate, Sheet, and Coil forms represents the **pinnacle of flat-rolled stainless steel performance**, engineered for the world's most severe corrosive and mechanical environments. As a super duplex stainless steel, it delivers an **extraordinary combination of extreme corrosion resistance and very high strength**. These product forms are the foundational materials for constructing pressure vessels, tanks, and structural components that must withstand aggressive chloride media, sour (H₂S) service, and demanding pressures. With a Pitting Resistance Equivalent Number (PREN) > 40, SAF 2507 offers a cost-effective, high-performance alternative to nickel-based alloys for critical applications in offshore, chemical, and marine industries. ## **Key Features** * **Extreme Corrosion Resistance:** Provides unparalleled resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC) in high-chloride, acidic, and sour environments, validated by PREN > 40. * **Exceptional Mechanical Strength:** Yield strength (≥ 550 MPa) is approximately **triple that of 316L**, enabling radical weight reduction, higher design pressures, and superior resistance to erosion and abrasion. * **Proven Sour Service Capability:** Fully qualified for the most stringent sour service applications under NACE MR0175/ISO 15156 standards, making it a cornerstone material for oil & gas production. * **Optimized for Heavy Fabrication:** Designed for reliable welding and forming into large structures, though it requires more stringent process controls than standard duplex grades. --- ## **1. Chemical Composition (Typical Weight % - Sandvik Specification)** The composition is tightly controlled to achieve the "super duplex" microstructure and properties. | Element | Content (%) | Element | Content (%) | | :------------- | :------------ | :------------- | :---------- | | Chromium (Cr) | 24.0 - 26.0 | Nickel (Ni) | 6.0 - 8.0 | | Molybdenum (Mo)| 3.0 - 4.0 | **Nitrogen (N)**| **0.24 - 0.32** | | Manganese (Mn) | ≤ 1.2 | Copper (Cu) | ≤ 0.5 | | Silicon (Si) | ≤ 0.8 | Carbon (C) | ≤ 0.030 | | Phosphorus (P) | ≤ 0.035 | Sulfur (S) | ≤ 0.020 | | **Iron (Fe)** | **Balance** | | | **Critical Quality Parameter:** The **high and tightly controlled Nitrogen content** is essential for achieving the required strength, phase balance, and corrosion resistance. **PREN Calculation:** PREN = %Cr + 3.3(%Mo) + 16(%N) ≥ **40** (Typically **41-43**) --- ## **2. Physical & Mechanical Properties (Typical - Solution Annealed Condition)** | Property | Value / Range | | :-------------------------------------------- | :-------------------------------- | | Density | 7.8 g/cm³ | | Thermal Conductivity (20°C) | ~17 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | ~12.5 x 10⁻⁶ /K | | Modulus of Elasticity | 200 GPa | | **Tensile Strength (Rm)** | **800 - 1000 MPa** | | **Yield Strength (Rp0.2)** | **≥ 550 MPa** | | **Elongation (A in 50mm)** | **≥ 15 %** | | Hardness (Brinell) | 270 - 320 HBW | | **Impact Toughness (Charpy V-notch, min.)** | **≥ 70 J at -40°C** | | **Critical Pitting Temperature (CPT) - ASTM G48** | **Typically ≥ 70°C** | **Product Form Definitions:** * **Plate:** Thickness typically ≥ 5mm, supplied as single flat pieces for heavy fabrication. * **Sheet:** Thickness typically < 3mm, for lighter fabrication. * **Coil (Strip):** Continuous length for high-efficiency processing or further rolling. --- ## **3. Product Forms & Applications** **Available Product Forms & Conditions:** * **Plate:** Quenched & Pickled (Q&P) heavy plate, cut-to-size, often supplied with advanced NDT (UT) certification. * **Sheet:** Cold rolled, annealed, and pickled. * **Coil:** Hot rolled and cold rolled coil (Annealed & Pickled). * **Special Variants:** Clad plate (with carbon steel backing for cost savings on thick sections). **Primary Applications (Severe Service):** SAF 2507 is specified for the most demanding applications where failure is not an option: * **Oil & Gas – Subsea & Sour Service:** Pressure vessels, separators, heat exchanger shells, scrubbers, and piping for offshore platforms, FPSOs, and sour wells. * **Chemical & Petrochemical Processing:** Reactors, columns, and tanks for concentrated acids (e.g., sulfuric, phosphoric), chlorides, and aggressive organic streams. * **Marine & Offshore:** Seawater piping systems, hull plates for specialized vessels, and structural components in splash zones. * **Pollution Control:** Absorber towers, ducting, and chimney liners in highly corrosive Flue Gas Desulfurization (FGD) systems. * **Desalination:** High-pressure vessel shells for Reverse Osmosis (RO) systems and thermal evaporator components. * **Pulp & Paper:** Digester vessels and critical high-temperature liquor heaters. --- ## **4. International Standards & Approvals** Sandvik SAF 2507 Plate, Sheet, and Coil meet the highest international standards for super duplex stainless steel. | Standard Type | Standard Number & Designation | Notes | | :------------------ | :--------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- | | **Unified Numbering System (UNS)** | **S32750** | The definitive super duplex specification. | | **EN / EURONORM (Europe)** | **1.4410** | The standard European material number. | | | EN 10088-2: Flat products | Key European product standard. | | **ASTM (USA)** | **ASTM A240/A240M** (Plate, Sheet, and Strip for Pressure Vessels and General Application) | **The primary procurement standard.** | | | **ASTM A480/A480M** (General Requirements for Flat-Rolled Stainless Steel) | Governs tolerances and delivery. | | **NACE MR0175 / ISO 15156** | **Fully Compliant** | Approved for severe sour service. Requires strict hardness control (typically ≤ 36 HRC) and proper heat treatment documentation. | | **ASME Boiler & Pressure Vessel Code** | **Section II, Part A** - SA-240 | Approved for construction of ASME-stamped pressure equipment. | | **Other Standards** | JIS G4304 / G4305 (Japan)
GB/T 20878 (China) | Included in major national standards. | --- ## **Critical Technical & Procurement Note** **SAF 2507 is a high-performance alloy requiring expert handling from procurement through fabrication.** 1. **Procurement Specification:** Unambiguously specify **"Sandvik SAF 2507 to ASTM A240 S32750"**. Ensure the purchase order references the need for a PREN > 40 guarantee on the certificate. 2. **Material Condition & Certification:** Material must be supplied in the **solution annealed, quenched, and pickled condition**. The **Mill Test Certificate (MTC/CMTR) is critical** and must include: * Full chemical analysis (verify N ≥ 0.24%). * Mechanical properties (transverse and longitudinal). * Impact test results at specified temperature. * Hardness values. * For plate: **Ultrasonic Testing (UT)** certification to an agreed standard (e.g., EN 10160, ASTM A578) is often mandatory. 3. **Fabrication & Welding (CRITICAL):** * **Heat Input Control:** Strictly limit heat input during welding to avoid harmful phase precipitation in the HAZ. * **Filler Metal:** **Must** use **over-matching super duplex filler metals** (e.g., Sandvik 25.10.4.L / ER2594) or nickel-based alloys (e.g., Alloy 625). * **Interpass Temperature:** Maintain a maximum interpass temperature (typically 100°C). * **Post-Weld Heat Treatment:** Generally **not recommended**. The design must accommodate weldment properties. 4. **Application Justification:** Select SAF 2507 only after a thorough corrosion assessment confirms that standard duplex (2205) is inadequate. Its use is justified by extreme service conditions and total lifecycle cost savings over alternatives. -:- For detailed product information, please contact sales. -: Sandvik SAF 2507 Plate, Sheet and Coil Specification Dimensions Size： Diameter 20-1000 mm Length <7299 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: Sandvik SAF 2507 Plate, Sheet and Coil Properties -:- For detailed product information, please contact sales. -:

Applications of Sandvik SAF 2507 Plate, Sheet and Coil -:- For detailed product information, please contact sales. -: Chemical Identifiers Sandvik SAF 2507 Plate, Sheet and Coil -:- For detailed product information, please contact sales. -:

Packing of Sandvik SAF 2507 Plate, Sheet and Coil -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3770 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition