25.22.2 / UNS S31050
The material 25.22.2 (also known as ASME SA310 MoLN , UNS S31050, or W.Nr 1.4466) has been elaborated for uses in urea plants, urea strippers, condensers and other corrosive environments. The chemical composition is similar to material A182 F310L, with low carbon, low silicon, high content of nitrogen that allows a high corrosion resistance.
25.22.2 is a fully austenitic stainless steel with a content of ferrite lower than 0.6%, after a heat treatment of solution annealing at 1100Â°C. The measure of grain size is between 3 and 6.