Stainless Steel Filler Wire

347Si / 347LSi



SUPER MIG 347Si/347LSi is a G 19 9 Nb Si / ER 347Si type solid MIG welding wire, supplied precision layer wound, depositing a Niobium stabilized 19Cr 9Ni weld metal, suitable for use with Ar+2%O2 or Ar+0.5…5%CO2 mixed shielding gases. SUPER MIG 347Si/347LSi is used for welding of 321 and 347 austenitic stainless steels and similar steel , mainly used in a range of applications including the fabrication of pipe, plate and vessels. SUPER MIG 347Si/347LSi weld metal has a high resistance to corrosive media at service temperatures <400°C and the presence of niobium reduces the propensity of intergranular chromium carbide precipitation and thus reduces the susceptibility to intergranular corrosion. The increased silicon content results in increased weld pool fluidity to give a smooth deposit appearance.


Size Range

0.60 mm to 1.60 mm (0.025” to 0.062”)



  • Bright Finish
  • Matte Finish
  • Semi Bright/Matte Finish
Product Name AWS/SFA Yield Strength N/mm2 Tensile Strength N/mm2  Elongation A5 Impact Energy ISO-V(J) 20° C Welding Conditions
SUPERMIG 347Si/347LSi AWS A5.9: ER 347Si/347LSi EN ISO 14343-A: G 19 9 Nb Si ≥400 ≥550 ≥30 ≥65 DC (+)


Type of Packing

SD 300 / BS 300  11.34 Kgs/ 25 Lbs, 15 Kgs/ 30 Lbs/ 33lbs Layer Wound Plastic/ Metallic Spool.
SD 200  4.54 Kgs/ 10 Lbs Layer Wound Plastic Spool.
SD 100 0.700 Kgs/0.910 /2 lbs Layer Wound Plastic Spool.
Mig Wire in Drum In Drums of 100-250 Kgs (200-550 Lbs)
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