S32304 Pipes & Tubes belong to the category of lean duplex stainless steel pipes & tubes which exhibit great strength, good corrosion resistance and chloride stress corrosion cracking. This grade also goes by the names of UNS S32304, Duplex 2304, and EN 1.4362, having a composition of 21.5 to 24.5% chromium, 3-5.5% nickel, and 0.05-0.60% molybdenum. It has a minimum yield strength of 400 MPa. Pipes are made to ASTM A790 and tubes to ASTM A789. They are utilized in chemical processing, water systems, storage tanks and industrial piping. Amardeep Steel is a reliable S32304 Pipes & Tubes supplier and manufacturer in India, providing good quality pipes & tubes with inspection report documents.
Technical Data
Specifications of S32304 Pipes & Tubes
| Parameter | Details |
|---|---|
|
Grade |
UNS S32304, Duplex 2304, SAF 2304, EN 1.4362 (X2CrNiN23-4) |
|
Seamless pipe |
ASTM A790 / ASME SA790 |
|
Seamless tube |
ASTM A789 / ASME SA789 |
|
European tube standard |
EN 10216-5 (seamless), grade 1.4362 |
|
Welded pipe and tube |
See the S32304 welded pipes and tubes page (A790, A789, A928) |
|
Pipe sizes |
1/2" to 8" NB seamless; SCH 5S, 10S, 40S, 80S, 160 |
|
Tube sizes |
6.35 mm to 50.8 mm OD, 0.89 mm to 2.77 mm wall |
|
Heat treatment |
Solution annealed and rapidly cooled |
|
Ends |
Plain end, bevelled end |
|
Length |
Single random, double random, cut to length |
|
Certification |
EN 10204 3.1, 3.2 with third party inspection on request |
Chemical Compositions of S32304 Pipes & Tubes
| Element | ASTM A790 / A789 S32304 (%) |
|---|---|
|
Carbon (C) |
0.030 max |
|
Manganese (Mn) |
2.50 max |
|
Phosphorus (P) |
0.040 max |
|
Sulphur (S) |
0.040 max |
|
Silicon (Si) |
1.00 max |
|
Nickel (Ni) |
3.0 to 5.5 |
|
Chromium (Cr) |
21.5 to 24.5 |
|
Molybdenum (Mo) |
0.05 to 0.60 |
|
Nitrogen (N) |
0.05 to 0.20 |
|
Copper (Cu) |
0.05 to 0.60 |
|
Iron (Fe) |
Balance |
Mechanical Properties of S32304 Pipes & Tubes
| Property (solution annealed) | ASTM A790 Pipe | ASTM A789 Tube (OD 25.4 mm and under) | ASTM A789 Tube (OD over 25.4 mm) |
|---|---|---|---|
|
Tensile strength, min |
600 MPa (87 ksi) |
690 MPa (100 ksi) |
600 MPa (87 ksi) |
|
Yield strength (0.2% offset), min |
400 MPa (58 ksi) |
450 MPa (65 ksi) |
400 MPa (58 ksi) |
|
Elongation in 50 mm, min |
25% |
25% |
25% |
|
Hardness, max |
290 HBW / 30 HRC |
290 HBW / 30 HRC |
290 HBW / 30 HRC |
Dimensions Chart of Duplex S32304 Pipes & Tubes
| DN | Nominal Pipe Size (NPS) | Outside Diameter (mm) | Outside Diameter (in) | Nominal Wall Thickness by Schedule (mm) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sch5s | Sch10s | Sch20 | Sch30 | Sch40 | STD | Sch80 | XS | Sch160 | XXS | ||||
|
8 |
1/4" |
13.7 |
0.54 |
— |
1.65 |
— |
1.85 |
2.24 |
2.24 |
3.02 |
3.02 |
— |
— |
|
10 |
3/8" |
17.1 |
0.675 |
— |
1.65 |
— |
1.85 |
2.31 |
2.31 |
3.20 |
3.20 |
— |
— |
|
15 |
1/2" |
21.3 |
0.84 |
1.65 |
2.11 |
— |
2.41 |
2.77 |
2.77 |
3.73 |
3.73 |
4.78 |
7.47 |
|
20 |
3/4" |
26.7 |
1.05 |
1.65 |
2.11 |
— |
2.41 |
2.87 |
2.87 |
3.91 |
3.91 |
5.56 |
7.82 |
|
25 |
1" |
33.4 |
1.32 |
1.65 |
2.77 |
— |
2.90 |
3.38 |
3.38 |
4.55 |
4.55 |
6.35 |
9.09 |
|
32 |
1.1/4" |
42.2 |
1.66 |
1.65 |
2.77 |
— |
2.97 |
3.56 |
3.56 |
4.85 |
4.85 |
6.35 |
9.70 |
|
40 |
1.1/2" |
48.3 |
1.90 |
1.65 |
2.77 |
— |
3.18 |
3.68 |
3.68 |
5.08 |
5.08 |
7.14 |
10.15 |
|
50 |
2" |
60.3 |
2.38 |
1.65 |
2.77 |
— |
3.18 |
3.91 |
3.91 |
5.54 |
5.54 |
8.74 |
11.07 |
|
65 |
2.1/2" |
73.0 |
2.88 |
2.11 |
3.05 |
— |
4.78 |
5.16 |
5.16 |
7.01 |
7.01 |
9.53 |
14.02 |
|
80 |
3" |
88.9 |
3.50 |
2.11 |
3.05 |
— |
4.78 |
5.49 |
5.49 |
7.62 |
7.62 |
11.13 |
15.24 |
|
90 |
3.1/2" |
101.6 |
4.00 |
2.11 |
3.05 |
— |
4.78 |
5.74 |
5.74 |
8.08 |
8.08 |
— |
— |
|
100 |
4" |
114.3 |
4.50 |
2.11 |
3.05 |
— |
4.78 |
6.02 |
6.02 |
8.56 |
8.56 |
13.49 |
17.12 |
|
125 |
5" |
141.3 |
5.56 |
2.77 |
3.40 |
— |
— |
6.55 |
6.55 |
9.53 |
9.53 |
15.88 |
19.05 |
|
150 |
6" |
168.3 |
6.62 |
2.77 |
3.40 |
— |
— |
7.11 |
7.11 |
10.97 |
10.97 |
18.26 |
21.96 |
|
200 |
8" |
219.1 |
8.62 |
2.77 |
3.76 |
6.35 |
7.04 |
8.18 |
8.18 |
12.70 |
12.70 |
23.01 |
22.23 |
|
250 |
10" |
273.0 |
10.75 |
3.40 |
4.19 |
6.35 |
7.80 |
9.27 |
9.27 |
15.09 |
12.70 |
28.58 |
25.40 |
|
300 |
12" |
323.8 |
12.75 |
3.96 |
4.57 |
6.35 |
8.38 |
10.13 |
9.53 |
17.48 |
12.70 |
33.32 |
25.40 |
|
350 |
14" |
355.6 |
14.00 |
3.96 |
4.78 |
7.92 |
9.53 |
11.13 |
9.53 |
19.05 |
12.70 |
35.71 |
— |
|
400 |
16" |
406.4 |
16.00 |
4.19 |
4.78 |
7.92 |
9.53 |
12.70 |
9.53 |
21.44 |
12.70 |
40.49 |
— |
|
450 |
18" |
457.0 |
18.00 |
4.19 |
4.78 |
7.92 |
11.13 |
14.27 |
9.53 |
23.83 |
12.70 |
45.24 |
— |
|
500 |
20" |
508.0 |
20.00 |
4.78 |
5.54 |
9.53 |
12.70 |
15.09 |
9.53 |
26.19 |
12.70 |
50.01 |
— |
|
550 |
22" |
559.0 |
22.00 |
4.78 |
5.54 |
9.53 |
12.70 |
— |
9.53 |
28.58 |
12.70 |
53.98 |
— |
|
600 |
24" |
610.0 |
24.00 |
5.54 |
6.35 |
9.53 |
14.27 |
17.48 |
9.53 |
30.96 |
12.70 |
59.54 |
— |
|
650* |
26" |
660.0 |
26.00 |
— |
— |
— |
— |
— |
9.53 |
— |
12.70 |
— |
— |
|
700* |
28" |
711.0 |
28.00 |
— |
— |
— |
— |
— |
9.53 |
— |
12.70 |
— |
— |
|
750* |
30" |
762.0 |
30.00 |
— |
— |
— |
— |
— |
9.53 |
— |
12.70 |
— |
— |
|
800* |
32" |
813.0 |
32.00 |
— |
— |
— |
— |
— |
9.53 |
— |
12.70 |
— |
— |
S32304 Pipes & Tubes Size Chart Range
| Pipe Size (in) | Diameter External (in) | Diameter Internal (in) | Nominal Thickness (in) | Transverse Area External (in2) | Transverse Area Internal (in2) | Transverse Area Steel (in2) | Surface Length External (ft/ft2) | Surface Length Internal (ft/ft2) | Internal Volume (ft3/ft) | Weight (lb/ft) | Weight (kg/m) | Threads per Inch |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1/8 |
0.405 |
0.270 |
0.07 |
0.13 |
0.06 |
0.07 |
9.43 |
14.20 |
0.0004 |
0.24 |
0.36 |
27 |
|
1/4 |
0.540 |
0.360 |
0.09 |
0.23 |
0.10 |
0.13 |
7.07 |
10.49 |
0.0007 |
0.42 |
0.63 |
18 |
|
3/8 |
0.675 |
0.490 |
0.09 |
0.36 |
0.19 |
0.17 |
5.66 |
7.75 |
0.0013 |
0.57 |
0.84 |
18 |
|
1/2 |
0.840 |
0.620 |
0.11 |
0.55 |
0.30 |
0.25 |
4.55 |
6.14 |
0.0021 |
0.85 |
1.26 |
14 |
|
3/4 |
1.050 |
0.820 |
0.11 |
0.87 |
0.53 |
0.33 |
3.64 |
4.64 |
0.0037 |
1.13 |
1.68 |
14 |
|
1 |
1.315 |
1.050 |
0.13 |
1.36 |
0.86 |
0.49 |
2.90 |
3.64 |
0.0060 |
1.68 |
2.50 |
11 ½ |
|
1 ¼ |
1.660 |
1.380 |
0.14 |
2.16 |
1.50 |
0.67 |
2.30 |
2.77 |
0.0104 |
2.27 |
3.38 |
11 ½ |
|
1 ½ |
1.900 |
1.610 |
0.15 |
2.84 |
2.04 |
0.80 |
2.01 |
2.37 |
0.0141 |
2.72 |
4.04 |
11 ½ |
|
2 |
2.375 |
2.070 |
0.15 |
4.43 |
3.36 |
1.08 |
1.61 |
1.85 |
0.0233 |
3.65 |
5.43 |
11 ½ |
|
2 ½ |
2.875 |
2.470 |
0.20 |
6.49 |
4.79 |
1.70 |
1.33 |
1.55 |
0.0333 |
5.79 |
8.62 |
8 |
|
3 |
3.500 |
3.070 |
0.22 |
9.62 |
7.39 |
2.23 |
1.09 |
1.25 |
0.0513 |
7.58 |
11.27 |
8 |
|
3 ½ |
4.000 |
3.550 |
0.23 |
12.56 |
9.89 |
2.68 |
0.95 |
1.08 |
0.0687 |
9.11 |
13.56 |
8 |
|
4 |
4.500 |
4.030 |
0.24 |
15.90 |
12.73 |
3.17 |
0.85 |
0.95 |
0.0884 |
10.79 |
16.06 |
8 |
|
5 |
5.563 |
5.050 |
0.26 |
24.30 |
20.00 |
4.30 |
0.69 |
0.76 |
0.1389 |
14.61 |
21.74 |
8 |
|
6 |
6.625 |
6.070 |
0.28 |
34.47 |
28.89 |
5.58 |
0.58 |
0.63 |
0.2006 |
18.97 |
28.23 |
8 |
|
8 |
8.625 |
7.980 |
0.32 |
58.42 |
50.02 |
8.40 |
0.44 |
0.48 |
0.3552 |
28.55 |
42.49 |
8 |
|
10 |
10.750 |
10.020 |
0.37 |
90.76 |
78.85 |
11.90 |
0.36 |
0.38 |
0.5476 |
40.48 |
60.24 |
8 |
|
12 |
12.750 |
11.940 |
0.41 |
127.64 |
111.90 |
15.74 |
0.30 |
0.32 |
0.7763 |
53.60 |
79.77 |
8 |
|
14 |
14.000 |
13.130 |
0.44 |
153.94 |
135.30 |
18.64 |
0.27 |
0.28 |
0.9354 |
63.00 |
93.75 |
8 |
|
16 |
16.000 |
15.000 |
0.50 |
201.05 |
176.70 |
24.35 |
0.24 |
0.25 |
1.2230 |
78.00 |
116.08 |
8 |
|
18 |
18.000 |
16.880 |
0.56 |
254.85 |
224.00 |
30.85 |
0.21 |
0.23 |
1.5550 |
105.00 |
156.26 |
8 |
|
20 |
20.000 |
18.810 |
0.59 |
314.15 |
278.00 |
36.15 |
0.19 |
0.20 |
1.9260 |
123.00 |
183.05 |
8 |
|
24 |
24.000 |
22.630 |
0.69 |
452.40 |
402.10 |
50.30 |
0.16 |
0.17 |
2.7930 |
171.00 |
254.48 |
8 |
Applications and Industrial Uses of S32304 Pipes & Tubes
- Chemical Processing Equipment
- Water Treatment Plants
- Storage Tanks and Tank Piping
- Heat Exchangers
- Pulp and Paper Processing Equipment
- Oil and Gas Processing Systems
- Industrial Cooling Water Systems
- Desalination and Seawater Handling Systems
Frequently Asked Questions
What is UNS S32304?
UNS S32304 (Duplex 2304, EN 1.4362) is a lean duplex stainless steel with 21.5% to 24.5% chromium, 3% to 5.5% nickel, 0.05% to 0.60% molybdenum and 0.05% to 0.20% nitrogen.
Which ASTM standards cover S32304 pipes and tubes?
ASTM A790 covers pipe, ASTM A789 covers tube and ASTM A928 covers electric fusion welded pipe.
What are the mechanical properties of S32304 pipe?
ASTM A790 sets 600 MPa minimum tensile strength, 400 MPa minimum yield, 25% minimum elongation and 290 HBW maximum hardness.
Can S32304 replace 316L?
In many chloride environments, yes. S32304 has pitting resistance close to 316L, more than twice its yield strength and better chloride stress corrosion cracking resistance.
What is the difference between 2304 and 2205?
2205 has 3% to 3.5% molybdenum and more nitrogen, giving higher pitting resistance. 2304 is a lean grade chosen for lower cost.
Is S32304 magnetic?
Yes. Its ferrite phase makes S32304 magnetic.
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