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2205 S31803 dualphase stainless steel tubepicture1

2205 S31803 dualphase stainless steel tube

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Product Details

Duplex 2205 Product Information

ProductsODWallLengths and/or coilsGradesODWallLengths
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

   Tensile StrengthYield Strength      
AlloyUNS DesignationSpec.psiMPaksipsiMPaksiElongation in 2 in. (min.) %Grain Size Req.Max. HardnessModulus of Elasticity (x106psi)Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6)Thermal Conductivity (BTU-in/ ft2-h-°F)
Duplex 2205S32205A789, A79095,0006559570,000485703028 Rc,
30* Rc
27.57.6180
Duplex 2205S31803A789, A79090,0006209065,000450653028 Rc,
30* Rc
27.57.6180

*OD over 1.0" TS>87, YS>58, no hardness requirement 1.0" OD and under

Composition of Duplex 2205 tubing and pipe

GradeDuplex 2205
UNS DesignationS31803/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 ElementsN/A

S32205 is the more restrictive chemistry and is shown

Duplex 2205 Product Range

AlloyUNS DesignationWerkstoff NR.Specifications*
2205S31803/S322051.4462A/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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