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ER309LSi

AWS A5.9 ER309LSi
ASME SFA 5.9 ER309LSi

ER309LSi has a higher level of silicon than ER309L combined with a carbon content lower than ER309. The increased silicon level provides better arc stability and a smoother bead appearance while an average 02% carbon level reduces carbide precipitation. Typical applications
would include those of ER309 and ER309L.

TYPICAL WIRE CHEMISTRY (%)

-

ER309LSi

C

0.02

Mn

2.03

Si

0.84

Cr

23.48

Ni

13.45