Products Description
Astm A815 Uns S32750 Duplex Stainless Steel Tube
Advantages of Astm A815 Uns S32750 Duplex Stainless Steel Tube
- Mechanical Properties: ASTM A815 UNS S32750 duplex stainless steel pipe offers high strength, approximately twice that of common austenitic stainless steels (such as 304/316).
- Corrosion Resistance: ASTM A815 UNS S32750 duplex stainless steel pipe offers excellent resistance to chloride pitting and crevice corrosion, as well as excellent resistance to stress corrosion cracking, making it suitable for use in marine and chemical industries.
- Processability: ASTM A815 UNS S32750 duplex stainless steel pipe exhibits excellent weldability and is suitable for various welding methods, typically requiring no post-weld heat treatment.
applications of Astm A815 Uns S32750 Duplex Stainless Steel Tube
- Offshore Oil and Gas Industry: Subsea pipelines, flowlines, risers, and manifolds, topside process piping for harsh marine environments, etc.
- Desalination and Water Treatment: Evaporator piping and heat exchangers, high-pressure piping for brine treatment, etc.
- Chemical and Petrochemical Processing: Heat exchangers and condensers exposed to corrosive process streams, etc.
- Marine Engineering and Shipbuilding: Structural piping, ballast water systems, fire water lines, and cooling systems exposed to seawater, etc.
- Power Generation: Heat exchangers, boilers, and condensers
Chemical Composition
| Element | C (max) | Mn (max) | Si (max) | P (max) | S (max) | Cr | Ni | Mo | N | Cu (max) |
| S32750 | 0.03 | 1.2 | 0.8 | 0.035 | 0.02 | 24–26 | 6–8 | 3–5 | 0.24–0.32 | 0.5 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (0.2%) | Elongation (%) | Hardness (HB) | Impact Toughness |
| Value | ≥ 800 | ≥ 550 | ≥ 25 | ≤ 310 | Excellent, even at -50°C |
Possible Alternative Grades
- UNS S32760: Super Duplex with higher corrosion resistance
- Duplex 2205 (S32205/S31803): standard duplex for less aggressive environments
- Alloy 20 (N08020): for strong acid resistance in chemical plants
- Nickel Alloys (Alloy 625, C-276): for extremely aggressive environments
- Titanium tubing: for maximum seawater corrosion resistance
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