BEST PIPELINE EQUIPMENT CO.,LTD
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Product Specification
| High Light | High PREN Super Duplex Stainless Steel Pipes ，Excellent corrosion resistance A790 UNS S32760 Pipes ，High mechanical strength Duplex Stainless Steel Pipes | ||
A790 UNS S32760 is a super duplex stainless steel grade commonly used for pipes and tubing in aggressive environments including offshore, chemical processing, and desalination applications. Its optimized alloy composition delivers exceptional strength and superior resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in chloride-containing media.
Typical chemical composition range for UNS S32760 (as specified in ASTM A790 pipes):
| Element | Composition Range |
|---|---|
| Chromium (Cr) | 24.0 – 26.0% |
| Nickel (Ni) | 6.0 – 8.0% |
| Molybdenum (Mo) | 3.0 – 4.0% |
| Copper (Cu) | 0.5 – 1.0% |
| Tungsten (W) | 0.5 – 1.0% |
| Nitrogen (N) | 0.20 – 0.30% |
| Manganese (Mn) | ≤ 1.0% |
| Silicon (Si) | ≤ 1.0% |
| Carbon (C) | ≤ 0.03% |
| Phosphorus (P) | ≤ 0.03% |
| Sulfur (S) | ≤ 0.02% |
| Iron (Fe) | Balance (remainder) |
These elements combine to deliver a very high PREN (Pitting Resistance Equivalent Number), typically exceeding 40, classifying S32760 as "super duplex." This makes it ideal for seawater, brine, and other chloride-rich environments.
The balanced composition of Cr, Ni, Mo, and N creates an approximate 50/50 ferrite-austenite microstructure, providing:
Copper enhances resistance to reducing non-oxidizing acids and sour-service environments, while tungsten further improves localized corrosion resistance.
Minimizing these elements improves weldability, toughness, and resistance to intergranular corrosion.
When selecting A790 UNS S32760 pipes, verify these composition ranges in the mill test certificate (MTC). For critical applications such as offshore, subsea, and high-chloride service, designers typically calculate the actual PREN using certified Cr, Mo, and N contents to ensure compliance with project specifications.
A790 UNS S32760 super duplex stainless steel pipes feature high chromium, molybdenum, and nitrogen content with copper and tungsten additions, low carbon levels, and a duplex microstructure. This combination delivers exceptional corrosion resistance and high mechanical strength for demanding industrial environments.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2010
Total Annual:
1000000-5000000
Employee Number:
116~209
Ecer Certification：
Verified Supplier
Best Alloy Engineering Alloy Pipe as s a reference point for excellence in the manufacture and distribution of fittings, piping, bends, forged flanges , clad products and specialties for the upstream, midstream and downstream sectors of oil & gas, thermal and nuclear power generation. The C... Best Alloy Engineering Alloy Pipe as s a reference point for excellence in the manufacture and distribution of fittings, piping, bends, forged flanges , clad products and specialties for the upstream, midstream and downstream sectors of oil & gas, thermal and nuclear power generation. The C...
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