Duplex Steel ASTM A790 UNS S31803 Pipes is a high-performance stainless steel pipe with high strength, corrosion resistance, and toughness. The pipe finds its application in industries where mechanical properties are high and resistance against adverse conditions must be ensured. The austenitic and ferritic microstructurs in Duplex Steel ASTM A790 UNS S31803 Pipes give it excellent toughness and improved stress corrosion resistance. Meta Aerospace deals in high-quality Duplex Steel ASTM A790 UNS S31803 Pipes as per high industrial norms.
What are Duplex Steel ASTM A790 UNS S31803 Pipes?
Duplex stainless steel ASTM A790 UNS S31803 Pipes is a ferritic-austenitic stainless steel pipe with high mechanical properties and resistance to stress corrosion cracking. The pipe has a balanced alloy of chromium, molybdenum, and nitrogen in its composition, giving it high overall strength and resistance to corrosion. The pipe has better weldability and finds usage in highly demanding industries such as chemical processing, oil & gas, and marine applications due to its high performance under high-pressure conditions and harsh temperature conditions without degradation in its performance.
Advantages of Duplex Steel ASTM A790 UNS S31803 Pipes?
One of the major benefits of Duplex Steel ASTM A790 UNS S31803 Pipes is their excellent resistance to corrosion, particularly in industrial and marine conditions.
- Higher Strength and Integrity: Duplex Steel ASTM A790 UNS S31803 Pipes's dual phase composition offers higher tensile and yield stresses than stainless steel grades with conventional composition.
- Corrosion Resistance: Due to its high resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, it finds application under aggressive conditions.
- Good Weldability: Duplex Steel ASTM A790 UNS S31803 Pipes doesn't require preheating while welding, minimizing fabrication expenses and enhancing productivity.
- Cost-Effective: Because of its greater strength, a more slender wall thickness can be utilized with resultant material and overall weight reduction.
- Extended service life: It resists oxidation and harsh chemicals, guaranteeing a long service life with limited requirements for maintenance.
Uses and Applications Duplex Steel ASTM A790 UNS S31803 Pipes?
- Oil & Gas Industry Duplex Steel ASTM A790 UNS S31803 Pipes finds immense application in oil & gas operations because it has excellent resistance to sour gas environment, suitably used in offshore drilling, pipelines, as well as subsea equipment.
- Chemical processing industry Duplex Steel ASTM A790 UNS S31803 Pipes is used by the chemical processing industry due to its corrosion resistance against aggressive chemicals, acids, and caustic solutions. It finds applications in reactors, heat exchangers, and tanks for storage.
- Marine & Shipbuilding Duplex Steel ASTM A790 UNS S31803 Pipes finds application in seawater piping, shipbuilding, as well as offshore platforms, where corrosion resistance and mechanical strength are critical.
- Power Generation Plants Duplex Steel ASTM A790 UNS S31803 Pipes is used in high-temperature and high-pressure applications in the power generation industry, such as boilers, heat exchangers, and condensers.
- Desalination Plants Duplex Steel ASTM A790 UNS S31803 Pipes is used in desalination plants due to its ability to withstand highly saline and corrosive conditions, maintaining its longevity in water treatment operations.
- Pharmaceutical and food processing industry Duplex Steel ASTM A790 UNS S31803 Pipes finds usage in pharmaceutical and food processing industry operations because of its high corrosion resistance and smooth surface finish to copyright hygiene and prevent contamination.
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What Are Specification Duplex Steel ASTM A790 UNS S31803 Pipes?
| ASTM Specification | ASTM A790 ASME SA790 |
|---|---|
| Applicable Standard | ASTM, ASME, JIS, AISI, AMS, EN, SAE, DIN, NF, TOCT, DS, DTD, GB |
| Size | 4 to 219mm W. T.: 0.5 to 20mm |
| Welded Pipe Size | 5.0 - 1219.2 mm |
| EFW Pipe size | 5.0 - 1219.2 mm |
| Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF, NO.1, NO.4, 2B, BA, HL, 8K, Mirror finish, etc |
| Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| Schedule | SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Length | Single Random, Double Random, Standard & Cut length Pipe |
| Form | Duplex 2205 Pipe are available in form of Round, Square, Hollow, Rectangular, Hydraulic, Coiled, Straight Pipes, “U” Shape, Pan Cake Coils etc. |
| Type | Seamless / ERW/ EFW / Welded / Fabricated / CDW / DOM / CEW Duplex 2205 Pipe |
| Pipe End | Plain End, Beveled End, Treaded Pipe, Screwed ends |
| Application | Dairy Pipe, Oil Pipe, Gas Pipe, Fluid Pipe, Boiler Pipe for Chemical Industry |
Equivalent material Of Duplex Steel ASTM A790 UNS S31803 Pipes?
| Grade | ASTM | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
|---|---|---|---|---|---|---|---|---|
| BS | En | No | Name | |||||
| 2205 | ASTM A790 ASTM A789 ASTM A928 | UNS S31803 | 318S13 | – | 1.4462 | X2CrNiMoN22-5-3 | 2377 | SUS 329J3L |
Chemical Composition Of Duplex Steel ASTM A790 UNS S31803 Pipes?
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 2205 (UNS S31803) | Min Max | – 0.030 | – 2.00 | – 1.00 | – 0.030 | – 0.020 | 21.0 23.0 | 2.5 3.5 | 4.5 6.5 | 0.08 0.20 |
Mechanical Properties Of Duplex Steel ASTM A790 UNS S31803 Pipes?
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell C (HR C) | Brinell (HB) | ||||
| UNS S31803 / 2205 | 621 | 448 | 25 | 31 max | 293 max |