Bohler ASN 5-IG description: GTAW rod for 3-4% molybdenum alloyed CrNi-steels like 1.4438 / 317L. 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 –269C. Resistant to intergranular corrosion up to +400°C.