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2304 (UNS S32304) is a 23% chromium, 4% nickel, molybdenum-free duplex stainless steel. The Alloy 2304 has corrosion resistance properties similar to 316L. Furthermore, its mechanical properties, i.e., yield strength, are twice those of 304L/316L austenitic grades. This allows the designer to save weight, particularly for properly designed pressure vessel applications.
The alloy is particularly suitable for applications covering the -50°C/+300°C (-58°F/572°F) temperature range. Lower temperatures may also be considered but need some restrictions, particularly for welded structures.
With its duplex microstructure and low nickel and high chromium contents, the alloy has improved stress corrosion resistance properties compared to 304 and 316 austenitic grades.
Duplex Stainless 2304 Applications
▪ Bridges
▪ Storage tanks
▪ Water heaters
▪ Heat exchangers
▪ Pressure vessels
▪ Feedwater tubes
▪ Heat exchangers
▪ Flue-gas cleaning
▪ Seawater systems
▪ Desalination plants
▪ Parts for structural design
▪ Rotors, impellers and shafts
▪ Firewalls and blast walls on offshore platforms
▪ Cargo tanks and pipe systems in chemical tankers
▪ Piping and instrumentation tubing for general service
Duplex Stainless 2304 Chemical Composition
Element | Content (%) |
Iron, Fe | 72.679 |
Chromium, Cr | 23 |
Nickel, Ni | 4 |
Molybdenum, Mo | 0.20 |
Nitrogen, N | 0.1 |
Carbon, C | 0.02 |
Sulfur, S | 0.001 |
°C | Rp 0.2MPa | Rp 1.0MPa | Rp 1.0MPa | °F | YS 0.2%Offset KSI | YS 0.1%Offset KSI | UTSKSI | Elongation% |
20 | 400 | 440 | 600 | 68 | 58 | 64 | 87 | 25 |
100 | 330 | 365 | 570 | 212 | 48 | 53 | 83 | 25 |
200 | 280 | 310 | 530 | 392 | 41 | 45 | 77 | 20 |
300 | 230 | 260 | 490 | 572 | 33 | 38 | 71 | 20 |
2304 stainless steel pipe sizes and specifications | |
Grade | 2304 |
Stainless steel seamless pipe | Outside diameter: 4.0 - 1219mm, Thickness: 0.5 -100mm,Length: 24000mm |
Stainless steel welded pipe | Outside diameter: 6.0 - 2800mm, Thickness: 0.3 -45mm,Length: 18000mm |
Stainless steel capillary pipe | Outside diameter: 0.4 - 16.0mm, Thickness: 0.1 -2.0mm,Length: 18000mm |
Stainless steel welded sanitary pipe | Outside diameter:8.0- 850mm, Thickness: 1.0 -6.0mm |
Stainless steel seamless sanitary pipe | Outside diameter: 6.0- 219mm, Thickness: 1.0 -6.0mm |
Stainless steel square pipe | Side Length: 4*4 - 300*300mm, Thickness: 0.25 - 8.0mm, Length: 18000mm |
Stainless steel rectangular pipe | Side Length: 4*6 - 200*400mm, Thickness: 0.25 - 8.0mm, Length: 18000mm |
Stainless steel coil pipe | Outside diameter: 0.4 - 16mm, Thickness: 0.1 - 2.11mm |
Standard | American Standard: ASTM A312, ASME SA269, ASTM A269, ASME SA213, ASTM A213 ASTM A511 ASTM A789, ASTM A790, ASTM A376, ASME SA335, B161, SB163, SB338, SB667/668 Germany Standard: DIN2462.1-1981, DIN17456-85, DIN17458-85· European Standard: EN10216-5, EN10216-2 Japanese Standard: JIS G3463-2006, JISG3459-2012 Russian Standard: GOST 9941-81 |
Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .
Q2: Can I have free sample before making orders?