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ASTM A789 Duplex Seamless Stainless Steel Pipe With Cold Rolled
Duplex Stainless Steel Tube Description
Duplex stainless steel tubes are a type of stainless steel tubing that contain a two-phase microstructure consisting of both austenitic and ferritic stainless steel. This combination provides a higher strength and better corrosion resistance compared to conventional austenitic stainless steels.
Duplex stainless steel tubes typically contain a roughly equal mixture of austenitic and ferritic phases, with chromium, nickel, molybdenum, and sometimes nitrogen for enhanced properties.
Duplex stainless steel tubes are a valuable material choice for applications requiring a balance of high strength and corrosion resistance in challenging environments.
Duplex Stainless Steel Tube Application
Duplex stainless steel is a very useful metal that is used the world over. It gets its name from the fact that it consists of two different grades of metal.
Essentially, Duplex is a Fe-Ni-Cr alloy that has a two-phase ferritic-austenitic stainless-steel microstructure when it is at room temperature.
Duplex Stainless Steel Tube Specification
| Item | Description | |
| Basic Information | Material Grade | S32205 , S31803 , S32304 , S32750 , F51 , F53 , 2205 , 2507 etc |
| Outer Diameter | 3.18mm - 101.6mm | |
| Wall Thickness | 0.5mm - 20mm | |
| Length | Normally fixed length 6m , can as per customer’s requirement | |
| Standard | ASTM A789 ; ASTM A790 ; EN 10216-5 etc. | |
| Process Method | Cold Drawn or Cold Rolled | |
Duplex Stainless Steel Tube Advantages:
1. Combines the advantages of both austenitic and ferritic stainless steels.
2. Offers high strength and excellent corrosion resistance.
3. Suitable for a wide range of demanding applications.
Duplex Stainless Steel Tube Specifications :
| DN | NPS(Inch) | D(mm) | SCH5S | SCH10S | SCH40S | STD | SCH40 | SCH80 | XS | SCH80S | SCH160 | XXS |
| 6 | 1/8 | 10.30 | - | 1.24 | 1.73 | 1.73 | 1.73 | 2.41 | 2.41 | 2.41 | - | - |
| 8 | 1/4 | 13.70 | - | 1.65 | 2.24 | 2.24 | 2.24 | 3.02 | 3.02 | 3.02 | - | - |
| 10 | 3/8 | 17.10 | - | 1.65 | 2.31 | 2.31 | 2.31 | 3.20 | 3.20 | 3.20 | - | - |
| 15 | 1/2 | 21.30 | 1.65 | 2.11 | 2.77 | 2.77 | 2.77 | 3.73 | 3.73 | 3.73 | 4.78 | 7.47 |
| 20 | 3/4 | 26.70 | 1.65 | 2.11 | 2.87 | 2.87 | 2.87 | 3.91 | 3.91 | 3.91 | 5.56 | 7.82 |
| 25 | 1 | 33.40 | 1.65 | 2.77 | 3.38 | 3.38 | 3.38 | 4.55 | 4.55 | 4.55 | 6.35 | 9.09 |
