OK Flux 10.81 is an agglomerated, low-basicity flux. The benefits of this flux are the smooth surface finish and excellent slag detachability. It is intended for a limited number of passes and plate thickness up to approximately 25mm. It is used for single and multi-wire procedures such as tandem and twin-arc welding. Concave fillet welds with excellent washing on the sidewalls are created with this flux as well as attractive butt and overlap welds. It works equally well on DC and AC and the high alloying of Si makes it well-suited for high-speed welding.
Due to its good weldability, OK Flux 10.81 is often used in the production of pressure vessels and spiral-welded water pipes. The excellent sidewall wetting, which is preferred for dynamic loads in horizontal fillet welds is made use of in general construction, beam fabrication, the automotive industry and tube-to-fin welding in the production of membrane wall panels. In many applications where the appearance of the weld bead or the nice washing on the sidewalls in fillet welds are the main requirements, OK Flux 10.81 is chosen.