What is 310S material equivalent to?

 

PROPERTIES :

STANDARD

> EURONORM :	EN 1.4335	X1 Cr Ni 25-21
> ASTM :	310L NAG

 

CORROSION RESISTANCE :

 

Because of its high chromium content, UR™ 65 has an excellent resistance in boiling nitric acid solutions of less than about 70% concentration. In these conditions, the alloy behaves much better than 304 L grade.
Moreover, thanks to the close control of impurities such as carbon, silicon, phosphorus which are known to be deleterious to the resistance of stainless steels in nitric acid solutions in the sensitized condition, UR™ 65 grade performs very well in HNO3 solution up to 70%.
Nitric acid solutions containing CrVI species are much more oxydant than usual HNO3 solutions.
In those cases, UR™ 65 is normally not to be used. UR™ 65 melts are optimized to improve corrosion resistance in nitric acid solutions, even after welding.