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Product Details:
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| Product Name: | Welded Duplex Stainless Steel Tube | Specification: | ASTM A789 |
|---|---|---|---|
| Material Grade: | S31803 | Size Range: | OD: 4.00mm - 38.10mm; WT: 0.30mm - 3.00mm |
| Finishing Options: | Bright Annealing, Pickling, Polishing, Custom Cutting | Test Certificate: | EN10204 3.1 |
| Packaging: | Wooden Box, Bundled, Export Packaging Available | Quality Assurance: | 100% ET |
| Shape: | Round | Application: | Heat Exchanger |
| High Light: | duplex stainless steel pipe,super duplex pipe |
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1.4362 duplex stainless steel Tube Bright Annealed 25.4 X 1.65MM TIG Welded High Strength
UNS S31803 Duplex stainless steel welded tubeis a duplex (austenitic-ferritic) stainless steel containing about 40 - 50% ferrite in the annealed condition. 2205 has been a practical solution to chloride stress corrosion cracking problems experienced with 304/304L or 316/316L stainless. The high chromium, molybdenum and nitrogen contents provide corrosion resistance superior to 316/316L and 317L stainless in most environments. S31803 is not suggested for operating temperatures up to 600°F.
The design strength of 2205 is significantly higher than 316/316L, often permitting lighter wall construction. 2205 has good notch impact toughness down to temperatures below - 40°F. 2205 is welded with E2209 or ER2209 fillers.
| Ni | Cr | Mo | Mn | Si | C | N | S | P | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|
| MIN | 4.5 | 22.0 | 3.0 | - | - | - | 0.14 | - | - | - |
| MAX | 6.5 | 23.0 | 3.5 | 2.0 | 1.0 | 0.03 | 0.2 | 0.02 | 0.03 | Balance |
1. High resistance to chloride stress corrosion cracking
2. Chloride pitting and crevice corrosion resistance superior to 317L stainless
3. Good general corrosion resistance
4. High strength
5. Good sulfide stress corrosion resistance
6. Useful up to 600°F
Applications:
1. Chemical process vessels, piping, and heat exchangers
2. FGD scrubber systems
3. Pulp mill digesters, bleach washers, chip presteaming vessels
4. Food process equipment
5. Oil field piping, heat exchangers
Specifications Duplex Stainless Steel Welded Tube:
| Stainless Steel & Nickel Alloy Tubing Specifications | |
| A 249/A 249M-04a | Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat Exchanger, and Condenser Tubes |
| A 268/A 268M-05a | Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| A 269-07 | Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service |
| A 270-03a | Standard Specification for Seamless and Welded Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubing |
| A 450/A 450M-04a | Standard Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes |
| A 554-03 | Standard Specification for Welded Stainless Steel Mechanical Tubing |
| A 789/A 789M-05b | Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service |
| A 1016/A 1016M-04a | Standard Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes |
| B 338-06a | Standard Specification for Seamless and Welded Titanium and Titanium Alloy Tubes for Condensers and Heat Exchangers |
| B 468-04 | Standard Specification for Welded UNS N08020, N08024, and N08026 Alloy Tubes |
| B 515-95 (2002) | Standard Specification for Welded UNS N08120, UNS N08800, UNS N08810, and UNS N08811 Alloy Tubes |
| B 516-03 | Standard Specification for Welded Nickel-Chromium-Iron Alloy (UNS N06600, UNS N06603, UNS N06025, and UNS N06045) Tubes |
| B 543-96 (2003) | Standard Specification for Welded Copper and Copper-Alloy Heat Exchanger Tube |
| B 552-98 (2004) | Standard Specification for Seamless and Welded Copper-Nickel Tubes for Water Desalting |
| B 626-06 | Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Tube |
| B 674-05 | Standard Specification for UNS N08925, UNS N08354, and UNS N08926 Welded Tube |
| B 676-03 | Standard Specification for UNS N08367 Welded Tube |
| B 704-03 | Standard Specification for Welded UNS N06625, UNS N06219, and UNS N08825 Alloy Tubes |
| B 730-93 | Standard Specification for Welded Nickel (UNS N02200/UNS N02201) and Nickel Copper Alloy (UNS N04400) Tube |
| B 751-03 | Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube |
Contact Person: Will Ma
Tel: +86 13918539222
