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Rutile coated electrode of E309L-17 / E 23 12 L type primarily intended for surfacing low-alloyed steels and for dissimilar welds between mild steel and stainless steels. Can also be used for welding some high temperature steels, such as ASTM 309S / 1.4833. Results in an austenitic all weld metal microstructure with ~15% ferrite. Corrosion resistance is superior to E308L / E 19 9 L fillers. When used for overlay welding on mild steel a corrosion resistance equivalent to that of 304 / 1.4301 is obtained already in the first layer. Suitable for service temperatures from –75°F to 570°F and for weld cladding up to 750°F.