Duplex 2205 Product Information
| 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
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Tensile Strength |
Yield Strength |
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| Alloy |
UNS Designation |
Spec. |
psi |
MPa |
ksi |
psi |
MPa |
ksi |
Elongation in 2 in. (min.) % |
Grain Size Req. |
Max. Hardness |
Modulus of Elasticity (x106psi) |
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 |
*OD over 1.0" TS>87, YS>58, no hardness requirement 1.0" OD and under
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 |
S32205 is the more restrictive chemistry and is shown
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.
