| Standard: | ASTM A312， ASME SA312 | Material Grade: | UNS S31254， 254SMO |
|---|---|---|---|
| Outer Diameter: | 6mm-630mm Or Customized | Thickness: | 0.1mm-60mm |
| Length: | 3-6M Or As Customized | Finish: | Annealed & Pickled |
| Technique: | Cold Rolled Hot Rolled，Cold Drawn | Applications: | Industry，construction，boiler，oil And Gas，Oil Gas Sewage Transport |
ASTM A312 UNS S31254， 254SMO Duplex Stainless Steel For Oil And Gas Plant
ASTM A312 UNS S31254 / 254SMO Duplex Stainless Steel Pipes are a high-alloy austenitic stainless steel developed for using in seawater and other aggressive chloride-bearing media. It is especially developed for oil and gas industry， paper and pulp industry and offshore platforms. Due to the addition of chromium and molybdenum， it can resists a wide range of acids. 254SMO Stainless Steel Pipe has excellent resistance to pitting and crevice corrosion， good weldability， high resistance to general corrosion and stress corrosion cracking， high strength.
Specifications:
| Specifications | ASTM A 312， ASME SA 312 |
| Grade | UNS S31254， 254SMO |
| Size | 1/2" – 48" |
| Specialized in | Large Diameter Size |
| Thickness | SCH 10 To SCH XXS |
| Types | Seamless / ERW / Welded / Fabricated |
| Length | 6M Or As Custom， Single Random， Double Random & Cut Length. |
| End | Plain End， Beveled End， Treaded |
Features:
High strength
Good weldability
Excellent resistance to pitting and crevice corrosion
High resistance to general corrosion and stress corrosion cracking
Chemical Compositions:
| C | Cr | Cu | Mn | Mo | N | Ni | P | Si | S |
| 0.02 Max | 19.5-20.5 | 0.5-1 | 1 Max | 6.0-6.5 | 0.18-0.22 | 17.5-18.5 | 0.03 Max | 0.8 Max | 1.01 Max |
Mechanical Properties:
| Tensile Strength， min | Yield Strength 0.2% Proof， min | Elongation (% in 50mm)， min | Hardness | |
| Rockwell B (HR B)， max | Brinell (HB)， max | |||
| 650 MPa | 300 MPa | 35 % | 50 | 270 |
Applications:
Saltwater Handling System
Oil And Gas Plant
Food Processing Equipment
Chemical Industry
Pulp And Paper Industry
Flue-gas Cleaning
Desalination
Heat Exchangers
Tanks And Pipelines
