Does 2205 duplex stainless steel rust?
As with all corrosion-resistant alloys, 2205 duplex stainless steel can suffer corrosion when exposed to suitably corrosive conditions. As they contain a higher chromium content than standard 304/316 grades, their Pitting Resistance Equivalent Number (PREN) is higher, indicating increased resistance to pitting corrosion. For instance, the PREN for a duplex stainless steel (Sanmac 2205, SAF2205, 1.4462, F51/F60, S31803, S32205) is 34, whilst that for Alloy 316L (1.4404, S31603) is only 25. Therefore, an appreciable increase in resistance to pitting corrosion can be expected. Anbao Group is a experienced manufacturer of stainless steel pipe flanges ,carbon steel tubes,alloy steel tubes, 304/316 stainless steel tubes ,stainless steel 304/316 round bars , duplex 2205 tubes & bars ,metal casting,forging and precision investment machining which means we can handle all your needs.We are professional casting parts OEM/ODM manufacture and supplier in china.Anbao...