Location: i am an indian wrking all over the world
Posts: 13
DI v/s SS
03/26/2010 11:33 PM
Dear All,
In a tank with moderately corrosive nature of water( having conc. of alum, lime and sludge ) is it better to have SS 304, SS 316 or DI (ISO 7005-1,1992-E). There is another grade suggested i.e. SS 403...??
These alloys are subject to crevice corrosion and pitting. They have a range of incubation times in seawater ranging from essentially zero in the case of the free machining grades, such as Type 303, to 6 months to 1 year for the best alloys, such as Type 316. . If used in an application where chloride levels are low or where concentration cell corrosion has been prevented through design, they are likely to perform well.
400 Series Stainless Steels.
These alloys can be hardened by heat treatment but have poor resistance to corrosion. They are subject to both uniform and non-uniform attack in seawater. The incubation time for non-uniform corrosion attack in chloride containing environments is very short, often only hours or a few days. Unless protected, using these alloys in seawater or other environments where they are susceptible to corrosion is not recommended.
DI v/s SS
Re: DI v/s SS
