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[China]
Trade Verify
Address: NO.2 Haining Road,Ningcun Industrial Zone,Haibin Street,Wenzhou Bay New Area,Wenzhou, Zhejiang,China
Contact name:Marilyn
Wenzhou Shangle Steel Co., Ltd. |
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Verified Suppliers
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Overview:
The ASTM A789 UNS S31803 tubing refers to seamless and welded tubing manufactured in accordance with ASTM A789/ASTM A789M, which contains approximately 50% ferrite and 50% austenite. The stress corrosion resistance of ASTM A789 in neutral chloride solution and H2S is better than that of 304L, 316L austenitic stainless steel, and 18-5mo type duplex stainless steel. The UNS S31803 tubing is especially suitable for the temperature range of -50°F/+600°F. It may also be considered for applications beyond this temperature range, but there are some limitations, especially when applied to weld structures.
The ASTM A789/A789M UNS 31803 tubes shall be made by the seamless or welded process with no filler metal added. It shall be quenched in cool air or water rapidly to a temperature of 1800°F[980°C]-1900°F[1040°C]. For seamless tubes, as an alternative to final heat treatment in a continuous furnace or batch-type furnace, while the tube temperature is not lower than the specified minimum solution treatment temperature, tubes may be immediately quenched in water or rapidly cooled by other means.
Specification:
| Specification | ASTM A789 & Its equivalent ASME, DIN & EN Standard. |
| Grades | UNS S31803; 1.4462 |
| Type | U-bend & Straight seamless tube |
| Outer Diameter | 1/4'' to 2'' or custom size |
| Wall Thickness | BWG25;BWG22;BWG20;BWG18;BWG16;BWG14;BWG12;BWG10 |
| Length | Up to 6 meters, custom cut lengths |
| Delivery Condition | Solution Annealed & Pickled; Bright Annealed |
| Ends | Plain End, Beveled End |
| Other Testing | Product Analysis, Eddy Current Test, Hydrostatic Test, Ultrasonic Test, Flattening Test, Hardness Test, Tensile Test etc. |
| Dimension | All Pipes & Tube Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME |
| Packing | Plywood case/Woven bag in bundle |
Chemical Composition:
| Grade | C | Mn | P | S | Si | Cr | Ni | Mo | N |
| UNS S31803 | 0.03 max | 2.00 max | 0.03 max | 0.02 max | 1.00 max | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.2 |
Mechanical Properties:
| Grade | Tensile Strength, min, ksi (MPa) | Yield Strength, min, ksi (MPa) | Elongation in 2 in. or 50mm, min (%) | Hardness | Solutioning Temperature, min, °F(°C) | |
| Rockwell | Brinell/Vickers | |||||
| UNS S31803 | 90(620) | 65(450) | 25 | 30HRC | 290HBW/290HV | 1870–2010 (1020–1100) |
Applications:
1.Chemical Processing, Transport and Storage
2.Oil and Gas Exploration and Offshore Rigs
3.Mil and Gas Refining
4.Marine Environments
5.Pollution Control Equipment
6.Pulp & Paper Manufacturing
7.Chemical Process Plant
