Submerge Wires (LSW-309/309L) and Flux (LSF30)


LSF-30 is an agglomerated flux adding proper contents of alloying element to maintain the stability of the contents of ferrite in weld metal. It is designed for welding with stainless steel 309/309L to gain characteristics of great crack and corrosion resistibility and mechanical property. With good weldability, slag removal, stable arc, smooth bead appearance and welding efficiency.


It is suitable for welding of stainless steel 309/309L.

Notes on Usage:

    1. Dry the flux at 300-350℃ for 60 minutes before use.
    2. To get the corrosion resistibility and mechanical properties on heat effect zone, recommend to use low heat input.


AWS A5.9 ER309/309L

JIS Z3324 S309/309L

Typical chemical composition of weld metal (wt%)

C Mn Si Ni Cr
0.03 1.48 0.62 13.32 23.25

Typical mechanical properties of weld metal

YP N/mm2 EL % IV -196 ºC J
567 41

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
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