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