2507 Duplex Stainless Steel Plate
2507 duplex stainless steel (UNS S32750) is a type of super duplex stainless steel. Its corrosion resistance and strength are significantly higher than those of the standard 2205 duplex steel, representing the top performance of industrial duplex stainless steel.
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Product Introduction

2507 Super Duplex Stainless Steel Plate represents the pinnacle of standard duplex stainless steel performance, offering a significant advancement over grades like 2205. With a ferrite-austenite microstructure balanced at approximately 50/50, 2507 combines the best properties of both phases: the high strength and chloride stress corrosion cracking (SCC) resistance of ferritic steels with the toughness and weldability of austenitic steels .

The alloy's defining characteristic is its extremely high alloy content—particularly chromium, molybdenum, and nitrogen—resulting in a Pitting Resistance Equivalent Number (PREN) greater than 40. This provides exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in aggressive chloride-containing environments such as seawater, brine, and chemical process streams. Coupled with yield strength at least double that of standard austenitic stainless steels like 316L, 2507 enables the design of lighter, stronger, and longer-lasting equipment for the most demanding offshore, chemical, and energy applications

Product parameters


Item / ParameterSpecification for 2507 (UNS S32750 / EN 1.4410)Notes / Significance
Key FeatureSuper Duplex Grade. Unmatched combination of ultra-high strength (≥550 MPa YS) and extreme chloride corrosion resistance (PREN > 40).The premier choice where 316L or 2205 is insufficient.
Standard DesignationsUNS S32750, EN 1.4410, X2CrNiMoN25-7-4, SAF 2507, F53, ASTM A240/A240MSpecify UNS S32750 or EN 1.4410 for international procurement .
Chemical Composition (Typical wt.%)C: ≤ 0.030Cr: 24.0 - 26.0Ni: 6.0 - 8.0Mo: 3.0 - 4.0N: 0.24 - 0.32High Cr, Mo, and N are the foundation of its superior performance. Ultra-low carbon aids weldability.
Mechanical Properties (Solution Annealed Plate)Yield Strength (Rp0.2): ≥ 550 MPa (Typ. 640-750 MPa)Tensile Strength (Rm): ≥ 800 MPa (Typ. 800-1000 MPa)Elongation (A): ≥ 15-25%Hardness (HB): ≤ 290-320Mechanical strength is its primary advantage, allowing for down-gauging and weight savings.
Physical PropertiesDensity: 7.75 - 7.80 g/cm³Thermal Expansion (20°C): 13.0 x10⁻⁶/KThermal Conductivity (20°C): 16.0 W/(m·K)Magnetism: FerromagneticLower thermal expansion than austenitic steels reduces thermal stress.

Surface selection

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Packaging and transportation

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FACTORY SHOW

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FAQ

Q:What about your price? 
A:Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products. 

Q:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.

Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase. 

Q:Does the product have quality inspection before loading? 
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we
accept the third party inspection absolutely. 

Q:How about the delivery time? 
A:Within 3-15 days after we confirm you requirement. 

Q:What is your terms of payment ?
A:T/T, L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me. 

Q: Do you provide samples? 
A:Yes,we could offer the sample for you to test but please pay freight fee.

Q:How do we trust your company? 
A:We are a specialized company focusing on global steel trading and supply chain services. Our mission is to provide high-quality, multi-specification, and one-stop steel products and solutions to customers worldwide.

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