Bohler ASN 5-IG (SI) description: The weld metal shows a stable austenitic microstructure with good pitting resistance (PREN > 35) and crevice corrosion resistance as well as excellent CVN toughness behaviour down to –196°C. BOHLER ASN 5-IG (Si) has an increased Mo content (4.3 %) to compensate for segregation when welding high molybdenum alloyed steels, thus producing equivalent corrosion resistance to the relevant base metals offering a 3-4 % Mo guarantee. Resistance to intergranular corrosion up to +400°C.