Dnya Stainless Steel
Linkedin

2205 Duplex Stainless Steel Sheet & Plate

  • Home  
  • 2205 Duplex Stainless Steel Sheet & Plate

2205 Duplex Stainless Steel Sheet & Plate (UNS S32205, 1.4462)

2205 Duplex Stainless Steel is a nitrogen-enhanced duplex alloy combining austenitic and ferritic stainless steel structures. This dual-phase composition delivers better strength, corrosion resistance, and endurance. UNS S32205 (also known as 2205) is the most popular duplex stainless steel grade, and it is suited for demanding situations such as the marine, chemical processing, and oil and gas sectors.

 

Key Features:

  • High Strength: Nearly twice the yield strength of austenitic stainless steels such as 304 and 316.
  • Superior Corrosion Resistance: Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC), particularly in chloride-rich settings.
  • Good Weldability: Can be welded using most common techniques with minimal risk of intergranular corrosion.
  • Cost Efficiency: Requires less material due to high strength-to-weight ratio.
  • Excellent Fatigue Resistance: Performs well under cyclic loading and stress.

Available Thickness

3/16″1/4″5/16″3/8″1/2″5/8″3/4″7/8″1″1 1/8″1 1/4″1 3/8″1 1/2″
4.8mm6.3mm7.9mm9.5mm12.7mm15.9mm19mm22.2mm25.4mm28.6mm31.8mm34.9mm38.1mm
1 5/8″1 3/4″2″2 1/4″2 1/2″2 3/4″3″3 1/4″3 1/2″4″5″6″
41.3mm44.5mm50.8mm57.2mm63.5mm69.9mm76.2mm82.6mm88.9mm101.6mm127mm152.4mm
2205-duplex-stainless-steel-sheet-plate

Application

  • Automotive
  • Chemical and Pharmaceutical
  • Fertilizer
  • Food Processing and Handling
  • Manufacturing
  • Mining
  • Oil & Gas
  • Phosphate Mining

Standard

  • ASTM A240 / A240M
  • ASTM A276 / A276M
  • ASTM A312 / A312M
  • ISO 15510
  • EN 10088-2
  • IN 10204
  • HE G4304
  • HE G4305
  • ASME SA240 / SA240M

Duplex 2205 Stainless Steel Equivalent

CountryStandard NameEquivalent Grade
United StatesASTM A240UNS S32205
EuropeEN 10088-2X2CrNiMoN22-5-3
GermanyDIN1.4462
United KingdomBS3255S
FranceNFZ3CND22-5-3
ItalyUNI1.4462
JapanJISSUS 329J3L
ChinaGBS32205

Corrosion Resistance

  • General Corrosion: Duplex 2205 offers excellent resistance to general corrosion in a variety of environments, including acidic and alkaline conditions. Its balanced microstructure helps to maintain integrity and resist degradation over time.
  • Pitting and Crevice Corrosion: The alloy’s high chromium and molybdenum content provide significant resistance to pitting and crevice corrosion, especially in chloride-containing environments. This makes it suitable for applications where localized corrosion can be a concern.
  • Stress Corrosion Cracking (SCC): Duplex Steel 2205 is particularly effective against stress corrosion cracking, a common issue in austenitic stainless steels. Its ferritic phase helps to mitigate the risk of SCC, making it reliable in environments that stress materials.
  • Intergranular Corrosion: The alloy’s microstructure minimizes the risk of intergranular corrosion, a type of localized corrosion that occurs along the grain boundaries of the metal. This is particularly important in high-temperature applications.
  • Corrosion Fatigue: Duplex 2205 also exhibits good resistance to corrosion fatigue, which is the weakening of the material due to cyclic stress combined with a corrosive environment.

Duplex 2205 (1.4462) Chemical Composition

Element Composition (%)
Carbon (C) 0.03 max
Manganese (Mn) 2.0 max
Silicon (Si) 1.0 max
Chromium (Cr) 22.0 – 23.0
Nickel (Ni) 4.5 – 6.5
Molybdenum (Mo) 3.0 – 5.0
Nitrogen (N) 0.08 – 0.20
Phosphorus (P) 0.03 max
Sulfur (S) 0.02 max

Duplex 2205 (1.4462) Physical Properties

PropertyValue
Density7.8 g/cm³
Melting Point~1425-1500°C (2597-2732°F)
Young’s Modulus~200 GPa (29 x 10⁶ psi)
Poisson’s Ratio~0.3
Thermal Conductivity~15 W/m·K (8.7 BTU/hr·ft·°F)
Coefficient of Thermal Expansion~15 x 10⁻⁶/°C (8.3 x 10⁻⁶/°F)
Electrical Resistivity~0.74 µΩ·m

Duplex 2205 (1.4462) Mechanical Properties

Property Value
Tensile Strength 620 – 800 MPa (90 – 116 ksi)
Yield Strength 450 – 650 MPa (65 – 94 ksi)
Elongation 25 – 40%
Hardness (Rockwell B) 260 – 330 HB
Impact Toughness 100 – 200 J (at -50°C)

Fabrication Data

  • Welding: Duplex 2205 can be welded using conventional methods, but it’s important to use appropriate filler materials and welding techniques to avoid issues such as sensitization and embrittlement. Preheating is generally not required, but interpass temperatures should be controlled to avoid overheating.
  • Machining: The high strength of Duplex 2205 makes it more challenging to machine compared to austenitic stainless steels. Use sharp tools and lower cutting speeds to achieve good results.
  • Heat Treatment: Duplex 2205 is generally not heat treated but is instead supplied in the solution-annealed condition. It should be annealed at 1020-1100°C (1870-2010°F) and rapidly cooled to ensure the optimal microstructure.
  • Forming: The material has good formability in the solution-annealed condition, but care should be taken to avoid cold working that might lead to increased hardness or the formation of undesirable microstructures.
Send a Message

Feel Free to Say Hello or Send Your Questions

For more information or to request a quote, contact us today to discuss how Duplex Stainless Sheet & Plate 2205 can meet your specific project needs.