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JIS G3446-1994 JIS G3448-1997 JIS G3459-1997 JIS G3463-1994,ect.
GB13296-1991 GB14975-2002 GB14976-2002,ect.
Size:
ND5 - DN400
Length:
6m length or cutting any length as request
Applications:
fluid and gas transport, structure , boiler, heat exchanger, super heater
Introduction to S32760 Duplex Stainless Steel Pipe
S32760 duplex stainless steel pipe, also known as super duplex stainless steel, is a high-performance alloy renowned for its exceptional combination of strength, corrosion resistance, and durability. Here’s a detailed overview:
Chemical Composition
The key elements of S32760 include:
Chromium (Cr): 24–26%
Nickel (Ni): 6–8%
Molybdenum (Mo): 3–5%
Tungsten (W): 0.5–1%
Nitrogen (N): 0.2–0.3%
Carbon (C): ≤0.03%
Other elements: Iron (Fe) as the base, with small additions of copper (Cu) and manganese (Mn).
This composition creates a balanced duplex microstructure of austenite and ferrite phases, enhancing its mechanical and corrosion-resistant properties.
Mechanical Properties
Tensile Strength: ≥750 MPa
Yield Strength: ≥550 MPa
Elongation: ≥25%
Hardness (HB): ≤310
Density: ~8.0 g/cm³
These properties make S32760 pipes suitable for high-pressure and high-stress applications, far exceeding those of standard stainless steels like 304 or 316.
Corrosion Resistance
S32760 excels in resisting:
Pitting and Crevice Corrosion: Due to high Cr, Mo, and W content, it performs well in chloride-rich environments (e.g., seawater, brine).
Stress Corrosion Cracking (SCC): The duplex structure and nitrogen addition significantly reduce SCC risk compared to austenitic steels.
General Corrosion: Resistant to acids, alkalis, and organic solvents, making it ideal for chemical processing.
Applications
S32760 duplex stainless steel pipes are widely used in:
Oil and Gas Industry: Offshore pipelines, subsea equipment, and chemical injection systems.
Chemical and Petrochemical Plants: Reactors, heat exchangers, and pipelines for corrosive media.
Marine Engineering: Shipbuilding, seawater desalination systems, and coastal infrastructure.
Power Generation: Flue gas desulfurization (FGD) systems and high-temperature components.
Food and Pharmaceutical Industries: Equipment requiring high hygiene and corrosion resistance.
Advantages
High Strength-to-Weight Ratio: Reduces material usage and costs in structural designs.
Superior Durability: Long service life in harsh environments, minimizing maintenance.
Weldability: Can be welded using standard techniques, though post-weld heat treatment is sometimes recommended to optimize properties.
Resistance to High Temperatures: Maintains stability in applications up to ~300°C.
Standards and Specifications
S32760 conforms to international standards such as:
ASTM A790 (USA)
EN 10216-5 (Europe)
ISO 1127 (International)
Manufacturers typically provide certificates verifying chemical composition, mechanical properties, and non-destructive testing (NDT) results.
Comparison with Other Duplex Steels
Grade
Strength
Corrosion Resistance
Main Applications
S31803 (2205)
Moderate
Good in mild chloride environments
General industrial use
S32760
High
Excellent in severe chloride and acidic conditions
Offshore, chemical processing
S32750 (2507)
Very high
Similar to S32760 but with slightly lower W content
Demanding marine and oil & gas
Conclusion
S32760 duplex stainless steel pipe stands out as a premium material for critical applications where extreme corrosion resistance and high strength are non-negotiable. Its unique microstructure and alloy composition make it a preferred choice for industries operating in challenging environments, ensuring reliability and cost-effectiveness over the long term.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...
