LSF-56 is a neutral ﬂux. It is designed for multi-pass groove welds. With nice bead appearance, porosity resistance and good slag removability. High welding efficiency, good toughness can be obtained. It produces good impact property and minimum 500N/mm² tensile strength when used with LSW-EM12K.
Typical applications include pressure vessels, shipbuilding and general steel structure.
Notes on Usage:
- Dry the ﬂux at 350°C for 60 minutes before use.
- When performing first pass welding, it is recommend to use lower current to prevent cracking.
AWS A5.17 F7A2-EM12K
JIS Z3183 S502-H
Typical chemical composition of weld metal (wt%)
Typical mechanical properties of weld metal
|YP N/mm2||TS N/mm2||EL %||IV J|
|460||560||29||– 30 ºC J||– 40 ºC J|
Sizes and recommended current range ( DC+)
|Wire: Diameter (mm)||2.4||3.2||4.0|
|Wire: Weight per roll (kg)||25||25||25|
|Flux: Weight per bag(kg)||25||25||25|