Sandvik 2RE10
Seamless tube and pipe

Sandvik 2RE10 is very suitable for heat exchanger tube and pipe in processes that treat nitric acid for example, the manufacture of nitric acid, acrylic fibres, ammonium nitrate and the reprocessing of nuclear reactor fuel. Extensive practical experience in such applications has confirmed the superiority of 2RE10 over standard steels such as AISI 304L and AISI 329.

Tail gas preheaters
The main reason for highly corrosive conditions in tail gas preheaters is that droplets of nitric acid are entrained in the tail gas from the absorption tower. When this gas enters the heater, the droplets settle on the hot tube wall and start boiling. The temperature of the heating medium, usually hot process gas or steam, can be very high. In this type of condition, AISI 304L tends to have short a service life. Tubes and tube sheets manufactured in Sandvik 2RE10 are recommended for a long service life

Cooler/condensers
In cooler/condensers, corrosion is normally encountered at the inlet end, where the first condensate is formed. If reboiling of the first condensate occurs, the corrosive conditions become very severe, leading to the kind of attack illustrated in figure 5. This typical corrosion problem can be detected easily. By upgrading to Sandvik 2RE10 the service life will be substantially longer than, for example AISI 304L.





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A document from the Sandvik Materials Technology web-site.