Overview
2507 Super Duplex stainless steel (UNS S32750) is a high-performance duplex stainless steel designed for applications requiring exceptional corrosion resistance, high strength, and excellent durability in aggressive environments.
With a balanced austenitic-ferritic microstructure, 2507 offers superior resistance to pitting, crevice corrosion, chloride stress corrosion cracking, and erosion compared with conventional stainless steels such as 304, 316L, and standard duplex 2205.
Due to its outstanding performance in harsh conditions, 2507 Super Duplex stainless steel is widely used in offshore oil and gas, marine engineering, chemical processing, desalination plants, heat exchangers, and high-pressure piping systems.
At Yunming Metal, we supply a complete range of 2507 Super Duplex stainless steel products, including seamless tubes, welded tubes, pipes, plates, bars, flanges, and fittings. Products are available according to international standards and customer specifications.
Why Choose 2507 Super Duplex Stainless Steel?
2507 Super Duplex provides excellent mechanical properties and corrosion resistance for demanding industrial applications.
Superior Corrosion Resistance
2507 offers outstanding resistance to:
- Pitting corrosion
- Crevice corrosion
- Chloride corrosion
- Stress corrosion cracking (SCC)
making it ideal for seawater and offshore environments.
High Mechanical Strength
Compared with austenitic stainless steels, 2507 provides significantly higher yield strength, allowing:
- Reduced wall thickness
- Lower material weight
- Improved equipment efficiency
Excellent Chloride Resistance
The high chromium, molybdenum, and nitrogen content provides excellent protection in chloride-rich environments.
High PREN Value
2507 has a PREN (Pitting Resistance Equivalent Number) typically above 40, providing superior corrosion resistance compared with 316L and 2205 duplex stainless steel.
Long Service Life
Its combination of strength and corrosion resistance reduces maintenance requirements and improves reliability in severe operating conditions.
Typical Applications of 2507 Super Duplex Stainless Steel
Offshore Oil & Gas Industry
2507 is widely used in offshore and subsea applications, including:
- Offshore platforms
- Subsea pipelines
- Production tubing
- Flowlines
- Injection systems
- Process piping
Its excellent seawater corrosion resistance makes it ideal for demanding offshore environments.
Related Industry:
Oil & Gas
Marine Engineering
2507 Super Duplex is commonly used in marine systems such as:
- Seawater cooling systems
- Ship piping
- Desalination equipment
- Marine heat exchangers
- Offshore structures
Related Industry:
Marine Applications
Chemical Processing
Due to its resistance to aggressive chemicals, 2507 is suitable for:
- Chemical reactors
- Storage tanks
- Process piping
- Pressure vessels
- Acid handling equipment
Related Industry:
Chemical Industry
Desalination & Water Treatment
2507 provides excellent performance in high-chloride environments and is widely used in:
- Reverse osmosis systems
- Seawater desalination plants
- High-pressure pumps
- Filtration equipment
Related Industry:
Water Treatment
Heat Exchanger Systems
2507 tubes are used in demanding heat exchanger applications where high corrosion resistance and mechanical strength are required.
Applications include:
- Seawater heat exchangers
- Condensers
- Cooling systems
Related Industry:
Heat Exchanger
Pulp & Paper Industry
2507 is used in highly corrosive processing environments, including:
- Bleaching equipment
- Chemical storage systems
- Process pipelines
Our 2507 Super Duplex Stainless Steel Products
Yunming Metal provides a complete range of Super Duplex 2507 products:
- Super Duplex 2507 Seamless Tubes
- Super Duplex 2507 Welded Tubes
- Stainless Steel Pipes
- Stainless Steel Plates
- Stainless Steel Bars
- Stainless Steel Flanges
- Stainless Steel Fittings
Customized sizes, wall thicknesses, lengths, and surface finishes are available according to project requirements.
Technical Specifications
| Item | Specification |
|---|---|
| Material Grade | Super Duplex 2507 |
| UNS | S32750 |
| EN | 1.4410 |
| Standard | ASTM A789, ASTM A790 |
| Plate Standard | ASTM A240 |
| Flange Standard | ASTM A182 F53 |
| Corrosion Resistance | Excellent |
| PREN Value | ≥40 |
| MTC | EN 10204 3.1 Available |
2507 Super Duplex vs 2205 Duplex Stainless Steel
| Property | 2205 Duplex | 2507 Super Duplex |
|---|---|---|
| Material | Duplex Stainless Steel | Super Duplex Stainless Steel |
| UNS | S32205 | S32750 |
| Corrosion Resistance | Excellent | Superior |
| PREN | Around 35 | ≥40 |
| Strength | High | Higher |
| Typical Use | General offshore, chemical, water treatment | Extreme offshore, subsea, high chloride environments |
Why Choose Yunming Metal?
Yunming Metal supplies high-quality duplex and super duplex stainless steel products for global industrial applications.
Our advantages include:
- Professional stainless steel manufacturing experience
- Complete product range
- Strict quality control
- EN 10204 3.1 material certificates available
- Customized production capability
- Export experience worldwide
- Technical support for material selection
Frequently Asked Questions
What is 2507 Super Duplex stainless steel used for?
2507 is mainly used for offshore oil and gas, marine engineering, desalination plants, chemical processing, heat exchangers, and high-pressure piping systems.
Is 2507 better than 2205?
Yes. 2507 has higher alloy content, higher PREN value, better corrosion resistance, and higher strength than 2205, making it suitable for more severe environments.
Can 2507 stainless steel be welded?
Yes. 2507 can be welded using appropriate procedures while maintaining its duplex microstructure and corrosion resistance.
Can Yunming Metal supply customized 2507 products?
Yes. We supply customized Super Duplex 2507 tubes, pipes, plates, bars, flanges, and fittings according to customer specifications.
Conclusion
2507 Super Duplex stainless steel is one of the most advanced stainless steel grades for extreme industrial environments. Its excellent corrosion resistance, high mechanical strength, and outstanding chloride resistance make it an ideal solution for offshore oil and gas, marine engineering, chemical processing, and desalination applications.
Yunming Metal provides reliable 2507 Super Duplex stainless steel tubes, pipes, plates, flanges, and fittings manufactured according to international standards. Contact us for professional material solutions and customized stainless steel products.