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UNS S32205 Duplex Stainless Steel 2205 By yaang.com

DataTime:[2015-1-22]
Duplex Stainless Steel 2205 is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic stainless 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 stainless 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 2205

  • 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

About Duplex Stainless Steel 2205

Duplex Stainless Steel 2205 is the most common duplex alloy which contains 22% chromium and 5% nickel. Please refer to the chemical composition and mechanic properties tables below. For information on "Super Duplex Stainless Steel" which provides higher corrosion resistance please click on the links to Super Duplex Stainless Steel grades at the top of this page.

Chemical Composition

UNS No Grade C Si Mn P S Cr Mo Ni N Other
S32205 2205 0.030 1.00 2.00 0.030 0.020 22.0/23.0 3.0/3.5 4.5/6.5 0.14/0.20 ––

Mechanical Properties

UNS No Grade Proof Stress
0.2% (MPa)
Tensile Strength
(MPa)
Elongation
A5 (%)
Hardness (Max)
HB HRB
S32205 2205 450 620 20 293 31*

* Rockwell C Scale

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