CHANGZHOU STAINLESS STEEL PIPE              PED 97/23/EC


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Material(Grade)

Specs: S32205/S31803(1.4462) Cr-Ni-Mo-Nitrogen Stainless Steel

Alloy 2205 (UNS S32305/S31803) is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel pipe with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.

Alloy 2205 provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steel tube in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic.

General Properties
Application
Standards
Chemical Composition
Resistance to Corrosion
Physical Properties
Mechanical Properties
Structure
Welding
Processing
Machinability


S31803 Stainless Steel Tube | S32205 Stainless Steel Pipe
304 | 304L | 304H| 316/316L| 316Ti| 317L| 321/321H | 309S | 310S | 347/347H| S32205/S31803| S32750| 904L



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 ASTM-A790

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 (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 95 65,000 450 70 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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