Because of the high Mo and N contents, the PRE number for SAF 2205 is significantly higher than what would be the case with lower Mo and N contents which are still within the limits of UNS S31803. Nevertheless, based on practical experience, SAF™ 31803 can be used at considerably higher temperatures and chloride contents than ASTM 304 …
Generalmente, UNS2205 contiene aceros inoxidables dúplex ASTM S31803 y S32205. En otras palabras, tanto S31803 como S32205 se denominan acero inoxidable 2205, y S32205 es la serie mejorada de S31803 mediante la adición del contenido límite inferior de elementos de Cr, Mo y N, lo que hace una pequeña diferencia …