Ferrobend is a stockist and supplier of Duplex Stainless Steel Seamless Pipes to ASTM A790 UNS S31803 specification. Duplex stainless steel pipes are intended for general corrosive service with particular emphasis on resistance to stress corrosion cracking.
| Specification | Values |
|---|---|
| Forming | Hot and Cold Finished |
| Sizes | 1/8 to 24 Inch |
| Thickness | SCH 5 to SCH 160 |
| Length | SRL or DRL |
| End Preparation | Plain / Bevelled / Threaded |
For information on duplex stainless steel seamless pipes size, dimensions and weight, please refer below standard dimensional charts.
Find chemical composition, heat-treatment, mechanical properties including tensile, yield, hardness and flattening test, surface finish, and other optional requirements for duplex stainless steel ASTM A790 UNS S31803 pipes.
| Element | Composition, % |
|---|---|
| Carbon | 0.03 max |
| Manganese | 2.00 max |
| Phosphorus | 0.03 max |
| Sulfur | 0.02 max |
| Silicon | 1.00 max |
| Nickel | 4.50 - 6.50 |
| Chromium | 21.00 - 21.30 |
| Molybdenum | 2.50 - 3.50 |
| Nitrogen | 0.08 - 0.20 |
| Process | Value |
|---|---|
| Annealing Temperature °F [°C] | 1870 - 2010 [1020 - 1100] |
| Quenching | Rapid Cooling in Air or Water |
| Property | Value | |
|---|---|---|
| Tensile Strength, min, ksi, [MPa] | 90 [ 620] | |
| Yield Strength, min, ksi [MPa] | 65 [450] | |
| Elongation in 2 in. or 50mm, min, % | 25 | |
| Hardness, max | HBW | HRC |
| 290 | 30 | |
For Duplex Stainless Steel Welded Pipes, please visit here