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Payment Type: T/T,L/C
Transportation: Ocean,Land,Air
Model No.: ASTM A789/ASME SA789 UNS S31803
Brand: YUHONG
Standard: Astm
Section Shape: Round
Place Of Origin: China
Application: Structure Pipe
Whether Alloy: Non-Alloy
Standard: ASTM A789/ASME SA789
Material Grade: UNS S31803
Ends: Plain or Beveled
NDT: ET, UT, HT, PT
ASTM A789/ASME SA789 UNS S31803 Duplex Steel Tube
The ASTM A789 UNS S31803 tubing refers to seamless and welded tubing manufactured in accordance with ASTM A789/ASTM A1789M, 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.
Available Grades
| Grade | UNS | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 2205 | S31803 / S32205 | 318S13 | - | 1.4462 | X2CrNiMoN22-5-3 | 2377 | SUS 329J3L |
Chemical Composition Requirements
| Chemical composition for ASTM A789 UNS S31803 tubing, % | |
| C | ≤0.030 |
| Mn | ≤2.00 |
| P | ≤0.030 |
| S | ≤0.020 |
| Si | ≤1.00 |
| Ni | 4.5-6.5 |
| Cr | 21.0-23.0 |
| Mo | 2.5-3.5 |
| N | 0.08-0.20 |
Mechanical Properties
| Tensile Strength, min. | Yield Strength, min. | Elongation, min. | Hardness Brinell, max |
| Mpa | Mpa | % | HB |
| 620 | 450 | 25 | 290 |
Physical Properties
| Grades | density | Elastic | Mean Co-eff of thermal | Thermal | Specific | Electrical | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| UNS S331803 | 782 | 190 | 13.7 | 14.2 | - | 19 | - | 418 | 850 |
Applications:
Chemical Processing, Transport and Storage
Oil and Gas Exploration and Offshore Rigs
Mil and Gas Refining
Marine Environments
Pollution Control Equipment
Pulp & Paper Manufacturing
Chemical Process Plant
| Selling Units | : | Piece/Pieces |
|---|---|---|
| Package Type | : | Ply- Wooden Case/Plastic Bag / Plastic Cap |
| Picture Example | : |
|
Packaging: Ply- Wooden Case/Plastic Bag / Plastic Cap
Productivity: 100 Tons Per Month
Transportation: Ocean,Land,Air
Place of Origin: China
Supply Ability: According to Customers' Requirement
Certificate: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
HS Code: 7304419000
Payment Type: T/T,L/C
Incoterm: CFR,FOB,CIF,EXW,Express Delivery
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