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UNS S31803 (1.4462) and UNS S32205 Duplex Steel

Duplex UNS S31803 / UNS S32205 | 1.4462

• Good weldability in thick plates.
• Good low temperature toughness.
• Resistance to stress corrosion cracking of importance in many applications including hot water tanks, process plant, brewing tanks, and desalination plant.
• Higher strength which is around twice that of Type 304 austenitic stainless steel. This leads to reduced plate thicknesses being used in fabrications reducing the weight which is of particular significance in items such as pressure vessels, storage tanks, and structural applications such as bridges.

UNS S31803 (1.4462) and S32205 Duplex Steel

Duplex UNS S31803 / UNS S32205 | 1.4462

• Good weldability in thick plates.
• Good low temperature toughness.
• Resistance to stress corrosion cracking of importance in many applications including hot water tanks, process plant, brewing tanks, and desalination plant.
• Higher strength which is around twice that of Type 304 austenitic stainless steel. This leads to reduced plate thicknesses being used in fabrications reducing the weight which is of particular significance in items such as pressure vessels, storage tanks, and structural applications such as bridges.

More information

Stainless Steel Plate
Brown McFarlane stocks a wide range of large area duplex stainless steel plates which are certified to material grades UNS S31803, UNS S32205, and 1.4462. These steels are also compatible with the branded 2205 designation
All Brown McFarlane stock is manufactured by Western European steel makers and fully certified in accordance with the relevant material specification. In addition the material is enhanced with further tests such as E562 microstructure analysis, and corrosion testing to G48 or A293 Method C. In order to further ensure good corrosion resistance, all stock is purchased with a guaranteed minimum PREN of 35.
All material is produced and certified in accordance with NORSOK MDS D45 with plates up to and including 35 mm thick certified to Revision 4. Mill test certificates are produced with third party inspection to EN 10204 3.2.

Applications

  • Nuclear sector
  • Oilfield fabrications
  • Dished ends
  • Filters
  • Heat exchangers
  • Pressure vessels
  • Storage tanks
  • Valves
  • Flanges & fittings
  • Condensers
  • Line pipe
  • Pipe caps/pipe fittings
  • Silos
  • Subsea hydraulic equipment
  • Sewage/waste water services
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Properties

Chemical analysis

C Mn P S Si Cr Ni Mo N
0.03 2.00 0.03 0.02 1.00 21.0 – 23.0 4.5 – 6.5 2.5 – 3.5 0.08 – 0.20

Mechanical properties

Tensile Yield Elongation Hardness
MPa min Mpa min % min Brinell max
620 450 25 293

Size range

Thickness (mm) Plate sizes (mm)
5 12000 x 2000
6 12000 x 2000 12000 x 2500 12000 x 3000
8 12000 x 2000 12000 x 2500 12000 x 3000
10 12000 x 2000 12000 x 2500 12000 x 3000
12 12000 x 2000 12000 x 2500 12000 x 3000
15 12000 x 2000 12000 x 2500 12000 x 3000
20 12000 x 2000 12000 x 2500 12000 x 3000
25 12000 x 2000 12000 x 2500 12000 x 3000
30 6000 x 2000 5000 x 2500
35 6000 x 2000 5000 x 2500
40 6000 x 2000 5000 x 2500
45 6000 x 2000 5000 x 2500
50 6000 x 2000 5000 x 2500

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