Rutile flux-cored wire of T 23 12 L P / E309LT1 type, primarily intended for surfacing low-alloyed steels and for dissimilar welds between mild steel and CrNi stainless steels. Ferrite measured with FeritScope MP30 14 – 22 FN. Corrosion resistance superior to T 19 9 L / E308L fillers. When used for overlay welding on mild steel a corrosion resistance equivalent to that of 1.4301 / 304 is obtained already in the first layer. The wide arc ensures even penetration and side-wall fusion to prevent lack of fusion. It is designed for all-round welding and can be used in all positions without changing the parameter settings. Due to the fast freezing rutile slag, the weldability is excellent also in the vertical-up and overhead positions. Very good slag detachability and almost no spatter formation. Suitable for service temperatures from –60°C to 300°C. The scaling temperature is approximately 1000°C in air. For flat and horizontal welding positions, FOXcore 309L-T0 DG may be preferred.