Product Information for Lean Duplex 2304 tubing and pipe
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Sizes |
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Standard Tolerances |
| Products |
OD |
Wall |
Lengths and/or coils |
Grades |
OD |
Wall |
Lengths |
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Welded Heat Exchangers & Condensers
Specifications: ASTM-A789 and ASME-SA789
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0.5" (12.7 mm) to 4" (101.6 mm)
Metric sizes available
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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)
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+/-15%
+/-10%
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+1/8" (3 mm)/-0" |
Physical Properties of Lean Duplex 2304 Alloys in the Annealed Condition at -20°F to +100°F
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Tensile Strength |
Yield Strength |
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| 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 |
*OD over 1.0"TS>87, YS>58, no hardness requirement 1.0" OD and under
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.
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