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Duplex Steel 2304 Bar

Duplex Alloy 2304 can be cold rolled to various tempers. Contact Ulbrich Technical Service for additional information.

Stainless steel grade Duplex 2304 bar is a duplex stainless steel type with a structure that is a balance of ferritic and austenitic. It has high strength and toughness, resistance to stress corrosion cracking, high thermal conductivity, low thermal expansion, and easy fabrication. It is recommended that this steel is not used in areas where the steel would be exposes to temperatures over 1058°C (570°F) for prolonged periods.

Duplex 2304 bar is a 23% chromium, 4% nickel, molybdenum-free duplex stainless steel whose structure is a balance of ferritic and austenitic. It has general corrosion resistance similar or better than Alloys 304L and 316L but with yield strength nearly double that of austenitic stainless steels. Its duplex microstructure and low nickel and high chromium contents also allows Duplex 2304 to demonstrate improved stress corrosion resistant properties compared to 304 and 316. It is typically suitable for all applications in the -58oF to 572oF (-50oC to 300oC) temperature range and is designed to feature high mechanical strength, good weldability, good corrosion resistance, high resistance to stress corrosion cracking, good machinability, low thermal expansion, good fatigue properties, high thermal conductivity, and easy fabrication.

Characteristics

  • High resistance to chloride stress corrosion cracking
  • Resistance to chloride pitting and crevice corrosion
  • Good general corrosion resistance
  • Good sulfide stress corrosion resistance
  • High Strength
  • Good weldability and workability

Applications

  • 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

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

Mechanical Properties

Properties Metric Imperial
Tensile strength ≥ 600 MPa ≥ 87000 psi
Yield strength (@strain 0.200 %) ≥ 400 MPa ≥ 58000 psi
Modulus of elasticity 200 GPa 29000 ksi
Shear modulus (@temperature 20°C/ 68°F) 75.0 GPa 10900 ksi
Poisson’s ratio 0.333 0.333
Elongation at break ≥ 25 % ≥ 25 %
Hardness, Rockwell C ≤ 20.0 ≤ 20.0
Hardness, Brinell 180 - 230 180 - 230

Calico Metal Ind Pvt Ltd exports their products to countries like UAE, Bahrain, Italy, Indonesia, Malaysia, United States, Mexico, Chine, Brazil, Peru, Nigeria, Kuwait, Jordan, Dubai, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan & Saudi Arabia.