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Product Information

Lean Duplex 2304 Pipe and Tubing


Sizes Standard Tolerances
Products OD Wall Lengths and/or coils Grades OD Wall Lengths
Welded Heat Exchangers & Condensers

Specifications: ASTM-A789 and ASME-SA789

0.5" (12.7 mm) to 4" (101.6 mm)

Metric sizes available

0.020" (0.51 mm) to 0.150" (3.81 mm) Cut lengths to 60' (18.3 m) Lean Duplex 2304
< 0.50" (12.7 mm)
+/-0.005" (0.13 mm)
0.50" (12.7 mm) to <1.50" (38.1 mm)
+/-0.005" (0.13 mm)
1.50" (38.1 mm) to <3.50" (88.9 mm)
+/-0.010" (0.25 mm)
>3.50" (88.9 mm) to 4.00" (101.6 mm)
+/-0.015" (0.38 mm)
+/-15% +/-10% +1/8" (3 mm)/-0"

Physical Properties of Lean Duplex 2304 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)
Lean Duplex 2304

OD=1" & under

S32304 A789, A790 100,000 690 100* 65,000 450 58* 25 28 Rc, 30* Rc 27.5 7.6 180
Lean Duplex 2304

OD>1"

S32304 A789, A790 87,000 600 101* 58,000 400 58* 25 28 Rc, 30* Rc 27.5 7.6 180

Composition of Lean Duplex 2304 tubing and pipe


Grade Lean Duplex 2304
UNS Designation S32304
Carbon (C) Max. 0.030
Manganese (Mn) Max. 2.50
Phosphorous (P) Max. 0.040
Sulphur (S) Max. 0.040
Silicon (Si) Max. 1.00
Chromium (Cr) 21.5 – 24.5
Nickel (Ni) 3.00 – 5.50
Molybdenum (Mo) 0.05 – 0.60
Nitrogen (N) 0.05 – 0.60
Iron (Fe) Bal.
Copper (Cu) 0.05 – 0.60 Max.
Other Elements

Lean Duplex 2304 Product Range


Alloy UNS Designation Werkstoff NR. Specifications*
Lean Duplex 2304 S32304 1.4362 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.