BÖHLER FOX EAS 2 (LF) is a low carbon, core wire alloyed austenitic stick electrode of the E 19 9 L B / E308L-15 type with a basic coating. Thanks to a specially adapted alloy concept and a controlled ferrite content of 3 to 8 FN, it meets the high requirements for low temperature service, that is a lateral expansion above 0.38 mm at minus 196 degrees C, as LNG installations demand.
Among the base grades the maker gives 1.4301 (X5CrNi18-10), 1.4306 (X2CrNi19-11) and 1.4307 (X2CrNi18-9). The electrode bridges gaps well, gives a reliable root and steady control of the pool and the slag, which comes off easily even in narrow preparations, so cleaning after welding is short. The maker recommends it for structures under tension and for assembly welds, at a maximum service temperature of 350 degrees C.
- Classification EN ISO 3581-A: E 19 9 L B 2 2
- AWS classification A5.4 / SFA-5.4: E308L-15
- Coating: basic
- Current: DC+
- Diameters: 2.0 / 2.5 / 3.2 / 4.0 mm
- Lengths: 350 mm
Since the whole value of this grade lies in the controlled ferrite, watch the dilution and the interpass temperature so that you stay inside 3 to 8 FN. On cryogenic inspections record the parameters and the bead sequence. Dry the electrodes to the maker data sheet and keep them in a quiver, hydrogen at minus 196 degrees C does not forgive. Direct current, electrode positive, a narrow straight bead.
