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.

Packing︰ Wooden box

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