Duplex 2205
Stainless Steel AlloysProduct Information
Duplex 2205
| Products | OD | Wall | Lengths and/or coils | Grades | OD | Wall | Lengths |
|---|---|---|---|---|---|---|---|
| Welded Austenitic Steel Boiler, Super Heater, Heat-Exchangers & Condenser Tubes
Specifications: ASTM-A789 and ASME-SA789 |
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 Duplex 2205 Alloys in the Annealed Condition at -20°F to +100°F
| Â | Â | Â | Tensile Strength | Yield Strength | Â | Â | Â | Â | Â | Â | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy | UNS Designation | Spec. | psi | MPa | ksi | psi | 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) |
| Duplex 2205 | S32205 | A789, A790 | 95,000 | 655 | 95 | 70,000 | 485 | 70 | 30 | — | 28 Rc, 30* Rc | 27.5 | 7.6 | 180 |
| Duplex 2205 | S31803 | A789, A790 | 90,000 | 620 | 90 | 65,000 | 450 | 65 | 30 | — | 28 Rc, 30* Rc | 27.5 | 7.6 | 180 |
Composition of Duplex 2205 tubing and pipe
| Grade | Duplex 2205 |
|---|---|
| UNS Designation | S31803/S32205* |
| Carbon (C) Max. | 0.030 |
| Manganese (Mn) Max. | 2.00 |
| Phosphorous (P) Max. | 0.030 |
| Sulphur (S) Max. | 0.020 |
| Silicon (Si) Max. | 1.00 |
| Chromium (Cr) | 22.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 3.0 – 3.5 |
| Nitrogen (N) | 0.14 – 0.20 |
| Iron (Fe) | Bal. |
| Copper (Cu) | — |
| Other Elements | N/A |
Duplex 2205 Product Range
| Alloy | UNS Designation | Werkstoff NR. | Specifications* |
|---|---|---|---|
| 2205 | S31803/S32205 | 1.4462 | A/SA789, A/SA790 |
*Note: The specifications noted including ASTM, ASME, or other applicable authorities are correct at the time of publication. Other specifications may apply for use of these materials in different applications.
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