Agglomerated Aluminate-rutile type flux for welding general structural steels, pressure vessel and pipe steels, as well as fine grain structural steels having yield strength of up to 355N/mm2. AMA OP 181 produces a high silicon and manganese pick up and can therefore be used with 50-11, 50-12, electrode wires.It is particularly suited for high-speed welding applying the twin-wire process as well as in tandem and multi-wire welding. Owing to its metallurgical behavior AMA OP 181 can be preferably used for welding from both sides in one pass, e.g. IN longitudinal welding of large-diameter pipes and thin-walled spiral pipes.A further field of application is the welding of tube-web-tube points or finned tubes. On account of easy slag removal, AMA OP 181 preferably used in filled welding.It can be used on either DC or AC up to 1000A.
Basicity to boniszewskii: ~0.4
Metallurgical behavior: Pick-up and burn-off the alloying elements Si and Mn as a function of the alloy content of the wire electrode, DVS Merkblatt 0907, part 1
all-weld metal analysis( typical values ):
Mechanical properties of all-weld metal (typical values ):
*Only for fillet welds or tube-web-tube welding on finned tubes.
**At service temperatures down to +0°C