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UNS S32750 (2507) Super Duplex Stainless Steel Raw Material Perfect for Offshore Oil Rigs Desalination Plants and Chemical Processing Equipment
Product Overview:
UNS S32750 (2507) is a premium super duplex stainless steel combining the superior corrosion resistance of austenitic steels with the mechanical strength of ferritic steels. With high chromium (25%), molybdenum (4%), and nitrogen (0.3%) content, it delivers exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC), making it ideal for offshore, chemical, and desalination industries. Its dual-phase microstructure ensures unmatched performance in chloride-rich, high-pressure, and high-temperature environments.
Key Physical Properties:
Chemical Composition: Cr (24-26%), Ni (6-8%), Mo (3-4%), N (0.24-0.32%), Fe (Balance)
Hardness (HB): 290-320
Tensile Strength (Rm): ≥800 MPa
Yield Strength (Rp0.2): ≥550 MPa
Elongation (A5): ≥25%
Density: 7.8 g/cm³
PREN (Pitting Resistance): ≥40
Max Service Temp: 300°C (572°F)
Product Features:
Extreme Corrosion Resistance
Superior resistance to chlorides, sulfuric acid, and seawater, outperforming 316L and 2205 duplex steel.
Ideal for offshore oil rigs, desalination plants, and chemical processing equipment.
High Mechanical Strength
Twice the yield strength of 316L, enabling thinner, lighter designs without compromising durability.
Maintains integrity under high-pressure and cyclic loading.
Excellent Weldability & Fabricability
Compatible with TIG, MIG, and SAW welding (use 2594 filler metal).
Post-weld heat treatment not required for most applications.
Stress Corrosion Cracking (SCC) Resistance
Performs reliably in H2S-containing (sour gas) and high-stress environments.
Cost Efficiency
Longer lifespan than standard duplex steels, reducing replacement and maintenance costs.
Core Advantages:
Typical Applications:
Oil & Gas: Subsea pipelines, Christmas trees, heat exchangers, pressure vessels.
Desalination & Marine: Seawater reverse osmosis (SWRO) systems, pump shafts, ship propellers.
Chemical Processing: Reactors, acid storage tanks, scrubbers, flue gas systems.
Power Generation: FGD (flue gas desulfurization) systems, condenser tubes.
Pulp & Paper: Bleaching equipment, digesters, chip chutes.
Renewable Energy: Offshore wind turbine components, tidal energy systems.
Why Choose Our S32750 Super Duplex Steel?
Quality Inspection:
Quality Management Department is establshed in the enterprise, which is responsible for the implementation of quallty management acrossall sectors, including QC, QA and implement and supervise various management system. The company reviews the Quality Manual byconducting management reviews annually to confirm its conformance, effectiveness and suitability.
| HENGLI Petrochemical 40 million / year ton of oil refining integration project
| ZHEJIANG Petrochemical 40 million / year ton of oil refining integration project | LIANYUNGANG Petrochemical 3.2 million tons / young hydrocarbon comprehensive | YISHENG New Material The 6.6 million tons / year of the PTA project
| CNOOC Huizhou Refining & Chemical Co Huilian Phase II, 22 million / year ton of oil refining Reconstruction and expansion project | Sinopec Zhenhai Refining & Chemical Company 1.2 million / year ton ethylene renovation and expansion project | Wanhua Chemical 480,000 tons / year bisphenol A integration project | GUANGXI Huayi New Materials Integration project of new chemical materials
| CNOOC Shell The SMPO & POD project
| China AtlantoShaanxi Coal Chemical Industry: 1.8 million tons / year ethylene glycol project |
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| Hainan Huasheng 2.26 million tons / year non-photogamic polycarbonate project | Shenghong Refining The 16 million tons / year oil refining project | Anhui Haoyuan Chemical Industry 300,000 tons / year ethylene glycol project | Heilongjiang Longyou Petrochemical Company5.5 million tons / year heavy oil catalytic pyrolysis project | HuaLu Hengsheng 500,000 tons / year ethylene glycol project | Baofeng Energy600,000 tons / year methanol to olefin project | Jiangnan Shipyard (98000m³ liquefied ethane ship, etc.) Brand number: 316 / 316L, delivery time: 2020.12 | Keppel shipyard in Singapore (FLNG ship) Brand number: 316 / 316L, delivery time: 2020.1 | Guangzhou Wenchong Shipyard (Super double-phase steel desulfurization tower) Brand number: S32750 Delivery time: 2021.3 | CSSC Dalian (FPSO, MV31, etc.) Brand number: 316L, etc., delivery date, 2019.8 |
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| 725 Institute of China Shipbuilding Industry (Cu-Ni alloy Tube) | Nantong COCSO Shipyard (FSRU ship module) | CIMC Raffles (Drilling Rig) | CNOOC Orient 13-2 (Lined pipe) | CNOOC Bozhong 19-6 (Lined Pipe) | Petrobras MODEC FPSO (COSCO Shipping) | CNOOC Guangxi LNG, storage and transportation storage Brand number: 304 / 304L | CNOOC Zhejiang LNG Phase II Brand number: 304 / 304L | Sinopec Shandong LNG Phase II Brand number: 304 / 304L | LIANYUNGANG Petrochemical A 4X160000m³ low-temperature ethane storage tank Brand number: 304 / 304L Specification: 813X12.7MM Delivery time: 2020.9 |
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| Sinopec Luoyang Institute Wenzhou LNG terminal Brand number: 304 / 304L Specification: 219.1~711X12.7MM Delivery time: 2022.3 | Huatai Shengfu 160,000 m ³ low-temperature ethane storage tank Brand number: 304 / 304L Specification: 219~508X9.53MM | YAMAL LNG Brand number: 304 / 304L Specification: 406~914X9.53MM | Beijing Maiden Voyage | Oriental Hope | Sichuan Yongxiang 70,000 tons / year high purity polysilicon project | Xinjiang Daquan 25,000 tons / year high purity polysilicon project | Eagle Central China Paper Industry 500,000 tons of box board project | Guangxi Sun Paper 3.5 million tons of forest pulp and paper integration project | APP for Asian pulp and paper Chemical machine pulp and sewage treatment project |
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| TCL Shenzhen Huaxing Optoelectronics semiconductor clean pipeline project | Beijing Daxing Airport | Hong Kong-Zhuhai-Macau/Macao Bridge Tubes used for stainless steel construction
| CNNC Xiapu nuclear Power Plant Fast reactor demonstration project of CNNC 2.3 | CONBA Stainless steel pipe for pharmaceutical engineering | Shenghong Refining Stainless steel associated heat pipe | Hangzhou Sewage Treatment Plant Stainless steel pipe for backwash purification unit | Qilu Pharmaceutical Fluid stainless steel pipe for raw material delivery | Zijin Mining Wet copper smelting, stainless steel sewage pipe | ect |
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Certificate
| API-5LD AUTHENTICATION | American Petroleum Institute API 5LC Certificate | ASME Certificate in the United States | EU PED&AD2000 certificate | ABS classification society certification certificate in the United States | DNV Det Norske Veritas Certificate | RINA Italian Bureau of Shipping Certificate | BV French Bureau of Shipping certification | LR Lloyd's Register Certificate of Approval | Customs Union EAC Certificate | Russian GOST certificate |
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| Raw Material Vendors | Cooperation Partners |
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Packing and Shipping:
This peoduct is carefully packaged to ensure its safe delivery to you. It is wrapped in protective packaging material to prevent any scratches or damage during transit.
For shipping, we use trusted delivery services to make sure your product arrives promptly and in excellent condition. You can track your order to know exactly when it will reach you.
Defy Extreme Environments with S32750 – Engineered for Reliability!
Engineers and project managers worldwide trust S32750 super duplex steel to tackle the harshest operational challenges. Contact us today for samples, certifications, or tailored quotes – let’s build solutions that last decades, not years!