UNS S31803 (1.4462) and S32205 Duplex Steel

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.

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.

Grades

Type	Grade	EN Steel Number	UNS
Duplex	S31803	1.4462	S32205/2205

Chemical Analysis (% max or range)
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