Specifications

  • BS 318S13
  • 1.4462
  • X2CrNiMoN 22-5-3
  • Z2CND22.05Az
  • Norsok MDS D45
  • ASTM A479/A182 F51
  • UNS S32205 Duplex F60
  • UNS S31803 Duplex F51
  • 22Cr
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Alloy 2205 (Plate) (UNS S32205 Duplex F60 (UNS31803 Duplex F51))

Alloy 2205 is a 22% Cr duplex stainless steel, supplied in the solution annealed condition. As a duplex stainless steel, it combines the desirable aspect of properties of both austenitic and ferritic grades. The high chromium, molybdenum and nitrogen contents results in a Pitting Resistance Equivalent number (PREN) of 33-34, providing pitting and crevice corrosion resistance superior to Alloy 316L or Alloy 317L austenitic stainless steels in almost all corrosive media. Due to its excellent corrosion properties, it is well-suited to environments containing chlorides and hydrogen sulphide, for use in oil and gas extraction from sour wells, in refineries and in process solutions contaminated with chlorides.

It also has good erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic steels. The yield strength is about twice that of austenitic stainless steels, allowing a designer to save weight and make the alloy more cost competitive when compared to Alloy 316L or Alloy 317L.

alloy 2205

Specifications

  • BS 318S13
  • 1.4462
  • X2CrNiMoN 22-5-3
  • Z2CND22.05Az
  • Norsok MDS D45
  • ASTM A479/A182 F51
  • UNS S32205 Duplex F60
  • UNS S31803 Duplex F51
  • 22Cr
View Data Tables For This Product

Data Tables

Product Features

Key Features:

  • Higher strength than standard stainless steels
  • Higher corrosion resistance than Alloy 316L stainless steel in a wide variety of corrosive chemicals including sulphuric, phosphoric and nitric acids
  • Good resistance to pitting and crevice corrosion in seawater
  • High stress corrosion resistance
  • Lower thermal expansion than austenitic stainless steels
  • Higher thermal conductivity than austenitic stainless steels

Applications:

  • Process industry components in sulphuric acid, nitric acid, phosphoric acid, ethylene oxide, polypropylene & PVC production
  • Equipment handling organic & fatty acids, chemical storage, tankers, heat exchangers
  • Marine industry and shipbuilding propellers, shafts, rudders, shaft seals, pumps, bolts, fasteners, valves, instrumentation
  • Oil and chemical tankers
  • Oil & Gas industry pumps, valves, pipe, vessels, wellhead equipment, subsea equipment, separators, heat exchangers
  • Pollution control systems, effluent scrubbing, flue gas desulphurisation (FGD)
  • Waste water treatment, sour water purification
  • Pulp & paper industry applications such as pulp liquor heaters, bleach tower linings, digesters, brownstock washers
  • Food industry applications including brewery piping, evaporators, hot liquor tanks, presses

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