

Classification:

EN ISO 14343

AWS A5.9

G 23 12 LSi

ER309LSi

Description:

Cromamig 309LSi deposits a 23% Cr / 13% Ni austenitic stainless steel weld metal with a ferrite

content of about FN 11. The high alloy level and high ferrite content enables the weld metal to tolerate

dilution from carbon and low alloy steels without hot cracking. The higher silicon content gives

better arc stability and weld metal flow which improves bead appearance, particularly when dip

transfer welding.

APPLICATIONS:

– Buffer layers on mild and low alloy steels prior to overlaying with MIG/TIG 308L.

– Joining of clad steels and dissimilar joints between stainless and mild or low alloy steels.

– Welding of similar composition, 309L type, stainless steels.

– Joining of ferritic-martensitic stainless steels.

Welding current:

DC+

Mechanical properties

Shielding gas:

M12, Ar + 2% CO2, 16-21 l/min

M13, Ar + 1-3% O2, 16-21 l/min

Yield strength, Rp0.2%:

Tensile Strength, Rm:

Elongation, A5

Impact energy, CV:

Typical

Wire composition, wt.%



















450 MPa

650 MPa

35%

20°C • 130 J

–120°C • 60 J

Ferrite content:

FN 11

Approvals:

TüV

Product data:

Diam. Product code

mm

0,8

1,0

1,2

98052008

98052010

98052012

Spool weight



15 kg S300

15 kg S300

15 kg S300

60-100

75-140

130-160

155

  

18-21

18-21

18-21

150-170

170-200

175-250

24-26

26-28

26-28