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Rutile flux-cored wire of E309LT0 / T 23 12 L R type. Primarily intended for surfacing low-alloyed steels and for dissimilar welds between mild steel and stainless steels. The corrosion resistance is superior to T 19 9 L / E308L type fillers. When used for overlay welding on mild steel the corrosion resistance is equivalent to that of base metal 1.4301 / 304 already in the first layer. Provides excellent weldability in flat as well as horizontal-vertical position. Ferrite measured with FeritScope MP30: 14 - 22 FN. Great slag detachability and almost no spatter formation. Optimized to result in a bright weld metal surface, also when welding with 100% CO2. Due to the slow freezing rutile slag, the weld metal shows very smooth bead appearance and low temper discoloration, which makes post weld cleaning easier. Maximum service temperature 575°F. The scaling temperature is approximately 1830°F in air. Welding in vertical-up and overhead positions is preferably done using FOXcore 309L-T1.