| Customization: | Available |
|---|---|
| After-sales Service: | Supplied |
| Warranty: | 30 Years |
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| Specification: | ASME SA789, ASTM A789 | Grade: | S31803 |
|---|---|---|---|
| Type: | Seamless, Welded, U-bend | Surface: | Pickled And Annealed, Polished, Bright Annealed |
| Non Destructive Test: | Eddy Current Test -ASTM E426, Hystostatic Test-ASTM A999, Ultrsonic Test -ASTM E213 | Size Standard: | ASTM B16.10 & B16.19 & Customized |
| High Light: |
S31803 Duplex Steel Tube,Round Duplex Steel Tube,Seamless Duplex Stainless Steel Tubing |
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ASME SA789 S31803 Duplex Steel Seamless Tube For Chemical Processing
UNS 31803 (F51), UNS 32205 (F60) Alloy 2205, UNS S32550 (F61), UNS S 32750 (F53), Alloy 2507 and UNS 32760 (F55)
Standards: ASTM/ASME A789/SA789, A790/SA790, A450, A530
Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205, UNS S32750(1.4410), UNS S31500(Cr18NiMo3Si2), UNS32760(1.4501)
Chemical Composition
| Grade |
C max |
Si max |
Mn max |
P max |
S max |
Cr | Ni | Mo | N |
| UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
| UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.5-5.5 | 2.5-3.5 | 0.05-0.10 |
Physical Properties
| Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC |
| UNS S32750 | 550 | 800 | 15 | 20 |
| UNS S31803 | 450 | 620 | 25 | 20 |
| UNS S31500 | 440 | 630 | 30 | 20 |
Mechanical Properties
| 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 | 621 | 448 | 25 | 31 max | 293 max |
31803/32205 Equivalent grades
|
STANDARD |
WERKSTOFF NR. |
UNS |
|---|---|---|
|
Alloy 2205 Pipe |
1.4462 / 1.4462 |
S31803 / S32205 |
A789 specification covers standard requirements for grades of nominal wall thickness, stainless steel tubing for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.
Heat and product analyses shall be performed wherein the steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, nitrogen, copper, and others.
Applications
Chemical processing, Transport and Storage
Oil and gas exploration and offshore rigs
Oil and gas refining
Marine environments
Pollution control equipment
Pulp and paper manufacturing
Chemical process Plant
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