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2205 S31803 dualphase stainless steel tube

  • 2205 S31803 dualphase stainless steel tube
  • 2205 S31803 dualphase stainless steel tube
  • 2205 S31803 dualphase stainless steel tube
  • 2205 S31803 dualphase stainless steel tube
Model No.︰BS-DSST
Brand Name︰BS
Country of Origin︰China
Minimum Order︰1 ton
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Product Description

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

      Tensile Strength Yield Strength            
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.

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