2304 duplex stainless steel

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2304 duplex stainless steel

Chemical Composition (%) of 2305 Duplex Stainless Steel Plate
C Mn Si P S Cr Cu Ni N
0.03 2.5 1.0 0.04 0.03 21.5 -24.5 0.05-2.0 3.0-3.5 0.05-2.0
Mechanical Properties of 2305 Duplex Stainless Steel Plate
Tensile Strength ksi (min) Yield Strength 0.2% ksi (min) Elongation % Hardness (HB) MAX
87 58 25 293
Physical Properties of 2305 Duplex Stainless Steel Plate
Density at 68°F (20°C) 0.28 lbm/in3 7800 kg/cm3
Coefficient of Thermal Expansion ax10-6°C-1
68°F to: 212°F (20 -100°C) 13
68°F to 392°F (20 -200°C) 13.5
68°F to 572°F (20 -300°C) 14
Thermal Conductivity W.m-1.K-1
at 68°F (20°C) 17
at 212°F (100°C) 18
at 392°F (200°C) 19
at 572°F (300°C) 20
Electrical Resitivity (μ_ cm)
at 68°F (20°C) 80
at 212°F (100°C) 92
at 392°F (200°C) 100
at 572°F (300°C) 105
Specific Heat (Btu/lb/°F)
32°F to: 212°F (20 -100°C) 0.11

Alloy 2304 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.

2304 Duplex Stainless Steel Applications:

Duplex 2304 is generally used in the same applications in which Alloys 304 and 316L are used. Some examples of these applications include:

  • Chloride containing environments
  • Welded pipe systems within the Pulp and Paper, Chemical and Petrochemical, and Water Treatment industries
  • Transportations
  • Heat exchanger tubes
  • Architecture, building, construction
  • Pressure vessels
  • Caustic solutions, organic acids
  • Food industry

Equivalent Standards of 2304 Duplex Stainless Steel:

  • ASTM/ASME: UNS S32304
  • EURONORM: FeMi35Cr20Cu4Mo2
  • DIN: 2.4660
If you are interested in other Stainless Steel Plates/Sheets, please click 302, 303, 304, 304L, 304H, 309, 309S, 310, 310S, 310H, 316, 316L, 317/317L, 317LMN, 321, 321H, 330, 347, 347H, 904L, 403, 405, 409, 410, 410S, 410/HT, 416, 416HT, 420, 422, 430, 440C, Duplex 2205, Duplex 2304, Duplex 2507.

 

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