Duplex Stainless Steel Tube
Parameter: 1/2''~48'', SCH5~SCHXXS
End: Beveled End, Plain End
Service: Cutting, Welding, Fabricated, Customized
Classification :
PRODUCT DETAILS
Description
Duplex Stainless Steel (DSS) including grades duplex 2205(S31803) and super duplex, they are commonly consist of 50% ferrite and 50% austenite, and generally requires not less than 30%. Duplex stainless steel has good welding performance and high strength. Compared with austenitic stainless steel, it is about double yield strength of stainless steel 316, 317 etc., it make the equipment lighter and stronger. Duplex stainless steel pipe has very good resistance to localized corrosion and stress corrosion cracking. Duplex steel is not intended to be used at temperatures above 300°C due to embrittlement, the continuous use temperature is from -50 to 250 °C.
Typical Properties:
Low cost
Alternative to high nickel based alloys
High strength
Corrosion resistant
Very hard machining
Applications
2205, used in chemical processing, oil and gas processing equipment, marine and other high chloride environments, effluent scrubbing systems, pulp and paper industry, cargo tanks for ships and trucks, food processing equipment, biofuels plant.
2304, used in chloride containing environments, welded pipe systems, transportation, heat exchanger tubes, construction, pressure vessels, caustic solutions and the food industry.
2507, used in oil and gas industry equipment, offshore platforms, chemical process industries, desalination plants, mechanical and structural components and power industry FGD systems.
Standard
Grade Available : UNS S31803, UNS S32205, UNS S31500, UNS S32304, UNS S32750, UNS S32760
ASTM A78s (ASME sA789): Specification for Seamless and Welded Feritic/Austenitic Stainless Steel Tubing for General Service
ASTM A790 (AsME SA790): Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
ASTM A928 - Standard Specification for Ferrtic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with
Addition of Filler Metal
The specification of EN 10216-5 is available.
| Grade | Chemical Composition | |||||||||
| C(max) | Si(max) | Mn(max) | P(max) | S(max) | Cr | Ni | Mo | N | Cu | |
| S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.8-8.0 | 3.0-5.0 | 0.24-0.32 | 0.5max |
| S13803 | 0.030 | 1.0 | 2.0 | 0.030 | 0.020 | 21.0-23.0 | 4.50-6.50 | 2.50-3.50 | 0.08-0.20 | |
Chemical Composition
| Steel No. | Standard No. | Type | C | Si | S | P | Mn | Cr | Ni | Mo | Other | ób | ós | δ5 | HB | Other |
| 0Cr26Ni5Mo2 | GB1220 | Bar | 0.08 | 1 | 0.03 | 0.035 | 1.5 | 23-28 | 3-6 | 1-3 | 590 | 390 | 18 | 277 | ψ%:40 | |
| 0Cr26Ni5Mo2 | GB4237 | Plate | 0.08 | 1 | 0.03 | 0.035 | 1.5 | 23-28 | 3-6 | 1-3 | 590 | 390 | 18 | 277 | ||
| 0Cr26Ni5Mo2 | GB/T14976 | Pipe | 0.08 | 1 | 0.03 | 0.035 | 1.5 | 23-28 | 3-6 | 1-3 | 590 | 390 | 18 | |||
| 00Cr18Ni5Mo3Si2 | GB1220 | Bar | 0.03 | 1.3-2 | 0.03 | 0.035 | 1.2-1.6 | 18-19.5 | 4.5-5.5 | 2.5-3 | 590 | 390 | 20 | ψ%:40 | ||
| 00Cr18Ni5Mo3Si2 | GB4237 | Plate | 0.03 | 1.3-2 | 0.03 | 0.03 | 1.2-1.6 | 18-19.5 | 4.5-5.5 | 2.5-3 | N:0.1 | 590 | 390 | 20 | ||
| HDR | Q/SJB11-99 | Pipe | 0.03 | 1 | 0.03 | 0.035 | 2 | 23-26 | 4.5-7.5 | 2-3 | 650 | 450 | 27 |
Physical Propertie
| Grade | Y. S. MPa(min) | T. S. MPa(min) | Elongation % | Hardness HRC |
| S32750 | 550 | 800 | 15 | 31 |
| S13803 | 450 | 620 | 25 | 31 |
Specification
| Pipe OD mm |
Pipe WT mm |
in. | Sch | Kg/m |
| 60.33 | 3.91 | 2 | 40S | 5.52 |
| 60.33 | 5.54 | 2 | 80S | 7.60 |
| 60.33 | 8.742) | 2 | 160 | 11.29 |
| 73.03 | 3.05 | 2½ | 10S | 5.35 |
| 73.03 | 5.16 | 2½ | 40S | 8.77 |
| 73.03 | 7.01 | 2½ | 80S | 11.59 |
| 88.90 | 3.05 | 3 | 10S | 6.56 |
| 88.90 | 5.49 | 3 | 40S | 11.47 |
| 88.90 | 7.62 | 3 | 80S | 15.51 |
| 88.90 | 11.132) | 3 | 160 | 21.67 |
| 101.60 | 3.05 | 3½ | 10S | 7.53 |
| 101.60 | 5.74 | 3½ | 40S | 13.78 |
| 101.60 | 8.08 | 3½ | 80S | 18.92 |
| 114.30 | 3.05 | 4 | 10S | 8.50 |
| 114.30 | 6.02 | 4 | 40S | 16.32 |
| 114.30 | 8.56 | 4 | 80S | 22.67 |
| 114.30 | 13.492) | 4 | 160 | 34.05 |
| 141.30 | 6.55 | 5 | 40S | 22.10 |
| 141.30 | 9.53 | 5 | 80S | 31.44 |
| 141.30 | 15.882) | 5 | 160 | 49.87 |
| 168.28 | 3.4 | 6 | 10S | 14.04 |
| 168.28 | 7.11 | 6 | 40S | 28.69 |
| 168.28 | 10.97 | 6 | 80S | 43.21 |
| 168.28 | 14.27 | 6 | 120 | 54.75 |
| 168.28 | 18.262) | 6 | 160 | 68.59 |
| 219.08 | 8.18 | 8 | 40S | 43.20 |
| 219.08 | 12.7 | 8 | 80S | 65.63 |
| 219.08 | 18.23 | 8 | 120 | 91.30 |
| 219.08 | 23.012) | 8 | 160 | 112.97 |
Note: For sizes other than given, please check with our office for further confirmation.
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