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:

1. 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.

2. High Mechanical Strength

   • Twice the yield strength of 316L, enabling thinner, lighter designs without compromising durability.

   • Maintains integrity under high-pressure and cyclic loading.

3. Excellent Weldability & Fabricability

   • Compatible with TIG, MIG, and SAW welding (use 2594 filler metal).

   • Post-weld heat treatment not required for most applications.

4. Stress Corrosion Cracking (SCC) Resistance

   • Performs reliably in H2S-containing (sour gas) and high-stress environments.

5. Cost Efficiency

   • Longer lifespan than standard duplex steels, reducing replacement and maintenance costs.

Core Advantages:

• Unrivaled PREN Value: PREN ≥40 ensures top-tier pitting/crevice corrosion resistance.
• Global Certifications: Complies with ASTM A790, EN 10088, NORSOK M-630, and ASME SA-182.
• Custom Solutions: Available in plates, pipes, fittings, bars, and custom-machined components.
• Fast Delivery: Global logistics network supports urgent orders to Europe, Middle East, and Asia.
• Technical Support: Free guidance on welding, machining, and application design.

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?

• Premium Quality: Controlled nitrogen content and solution annealing ensure phase balance (50% austenite/50% ferrite).
• Cost Savings: 30-50% lighter than carbon steel alternatives, reducing installation and lifecycle costs.
• Sustainability: 100% recyclable, supporting green industrial practices.
• Quality Assurance: Full PMI (Positive Material Identification) testing

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.

Project Achievement

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
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
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 Specification: (8 "~32")×(3.76~9.53mm)	CNOOC Zhejiang LNG Phase II Brand number: 304 / 304L Specification: (6 "~28")×(7.11~10.31mm)	Sinopec Shandong LNG Phase II Brand number: 304 / 304L Specification: DN250 SCH10S	LIANYUNGANG Petrochemical A 4X160000m³ low-temperature ethane storage tank Brand number: 304 / 304L Specification: 813X12.7MM Delivery time: 2020.9
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
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

Raw Material Vendors	Cooperation Partners

Packing and Shipping:

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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!

Everest Technology (Wuxi) Co., Ltd. is a one-stop industrial innovation solution provider, specializing in premium raw materials, precision manufacturing, and green technology. We empower global clients with end-to-end services from design to delivery, rooted in material expertise, smart manufacturing, and sustainable innovation.