What is the ASTM code for 1.4462 super duplex pipe?
Jan 12, 2026
Leave a message
What is 1.4462 super duplex pipe?
1.4462 pipe is made from a common Duplex Stainless Steel (often called 2205), known as EN 1.4462 in European standards, offering superior strength and corrosion resistance (especially against chlorides) compared to standard austenitic steels like 304/316, achieved by balancing ferritic and austenitic structures with elements like Chromium, Nickel, Molybdenum, and Nitrogen, making it ideal for harsh chemical, oil & gas, and marine applications.
What is the ASTM code for 1.4462 super duplex pipe?
The ASTM codes for DIN EN 1.4462 super duplex pipe (also known as 2205 Duplex) are primarily ASTM A790 (for seamless and welded pipes) and ASTM A789 (for seamless and welded tubes), with the corresponding UNS designators being UNS S31803 and UNS S32205, linked to ASTM A182 F51 and F60 for fittings/forgings, respectively.
1.4462 Duplex Stainless Steel Pipe Application:
Chemical processing, Transport and Storage.
Oil and gas exploration and offshore rigs.
Oil and gas refining.
Marine environments.
Pollution control equipment.
Pulp and paper manufacturing
Chemical process Plant
1.4462 Duplex Steel Composition % according to EN 10216-5:
| C | Si | Mn | P | S | Cr | Mo | Ni | N | Cu |
| max. 0,03 | max. 1,00 | max. 2,00 | max. 0,035 | max. 0,015 | 21,00 - 23,00 | 2,50 - 3,50 | 4,50 - 6,50 | 0,10-0,22 | - |
S32205 Stainless Steel Composition % according to ASTM A789 ASTM A790:
| C | Si | Mn | P | S | Cr | Mo | Ni | N | Cu |
| max. 0,03 | max. 1,00 | max. 2,00 | max. 0,030 | max. 0,020 | 22,00 - 23,00 | 3,0 - 3,5 | 4,5 - 6,50 | 0,14-0,20 | - |
S31803 Stainless Steel Composition % according to ASTM A789 ASTM A790:
| C | Si | Mn | P | S | Cr | Mo | Ni | N | Cu |
| max. 0,03 | max. 1,00 | max. 2,00 | max. 0,030 | max. 0,020 | 21,00 - 23,00 | 2,5 - 3,5 | 4,50 - 6,50 | 0,08-0,20 |
1.4462 Duplex Steel Information
| Products | OD | Wall | Lengths and/or coils | Grades | OD | Wall | Lengths |
| Welded Austenitic Steel Boiler, Super Heater, Heat-Exchangers & Condenser Tubes Specifications: EN 10216-5 | 3/16" (4.76 mm) to 4" (101.6 mm) Metric sizes available |
0.020" (0.51 mm) to 0.220" (5.59 mm) | Random or cut lengths up to 68' (20.7 m) Coils to 1-1/2" OD | Duplex 2205 |
<1-1/2" (38.1 mm) ±0.005" (0.13 mm) 1-1/2" (38.1 mm) to 3" (76.2 mm) ±0.010" (0.25 mm) 3-1/2" (88.9 mm) to 4" (101.6 mm) ±0.015" (0.38 mm) |
±10% | Randoms up to +2" (50.8 mm) Cuts +1/8" (3 mm) -0" Coils to 80,000' (24,384 m) |
Physical Properties of 1.4462 Duplex Steel in the Annealed Condition at -20°F to +100°F
| Tensile Strength | Yield Strength | |||||||||||
| Alloy | UNS | Spec. | MPa | ksi | MPa | ksi | Elongation in 2 in. (min.) % | Grain Size Req. | Max. Hardness | Modulus of Elasticity (x106 psi) | Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) | Thermal Conductivity (BTU-in/ ft2-h-°F) |
| 1.4462 Duplex | EN 10216-5 | 710 | 103 | 540 | 78 | 38 | - | 26 Rc, 27* Rc |
27.5 | 7.6 | 180 | |
1.4462 Duplex Steel Range
| Alloy | UNS Designation | Werkstoff NR. | Specifications* |
| 2205 | S31803/S32205 | 1.4462 | ASTM A789/ ASME SA789, ASTM A790 / ASMESA790 / EN 10216-5 |
If you have project requirements for 1.4462 stainless steel pipes, we welcome your order. GNEE has a large inventory of popular products for you to choose from. Available in both seamless and welded forms, please contact our factory immediately for detailed chemical composition information and free samples. We offer competitive prices and excellent service.
The pipes are packaged with waterproof paper and steel straps, meeting standard export sea freight packaging requirements, suitable for various transportation methods, or customized according to customer requirements.
Click to view the latest price
ASTM A790 UNS S32205 Stainless Steel Round pipe
Send Inquiry