UNS S32205 Duplex Stainless Steel

Duplex stainless is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades with similar corrosion resistance qualities.

One of the main attractions of duplex stainless steel is cost – due to the materials increased yield strength it is often possible to reduce the thickness of material making it much cheaper than a comparative austenitic stainless steel grade.

Also Duplex steel has a lower alloy content reduces production costs. Certainly cost and weight savings without loss of performance is an attractive proposition to purchasers.

Benefits of using UNS32205 Duplex Stainless Steel
  • Corrosion resistance much better than that of Type 316
  • Greater tensile and yield strength
  • Good ductility and toughness though not as good as austenitic grades
  • Good stress corrosion cracking resistance (SSC)
  • Opportunity for purchases to reduce their material costs without compromising on quality


Mechanical Properties of S32205

DescriptionDuplex 2205
Proof Stress 0.2% (MPa)450
Tensile strength (MPa)620
Elongation A5 (%)20
HardnessHB: 293
HRB: 96 (according to Rockwell C Scale)

Chemical Composition of S32205

UNS NoS32205
Carbon (C)0.030
Silicon (Si)1.00
Manganese (Mn)2.00
Phosphorus (P)0.030
Sulphur (S)0.020
Chromium (Cr)22.0/23.0
Molybdenum (Mo)3.0/3.5
Nickel (Ni)4.5/6.5
Nitrogen (N)0.14/0.20

Whatever your steel requirement or specification, Masteel has the knowledge and resources to provide you with a first class steel supply option.