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309LSi Stainless Steel Mig Wire - 300mm Spools

SUPERMIG 309LSi grade suitable for dissimilar metal welding & buffer layers before hard-facing. Available in 0.8, 0.9, 1.0, & 1.2mm
309LSi Stainless Steel Mig Wire - 300mm Spools
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SUPERMIG 309LSi is a G 23 12 LSi/ER 309LSi type solid MAG welding wire, supplied precision layer wound, depositing a low C-23Cr12Ni weld metal. Suitable for use with Ar+2%O2 or Ar+0.5-5%CO2 mixed shielding gases.

SUPERMIG 309LSi is used for the welding of stainless steels to mild and medium tensile steels. It is used for depositing intermediate (buffer) layers on steel prior to hard-facing or depositing 308 or 316 grade stainless steel. Also used for the welding of clad steels where service temperatures are below 300°C. The weld metal has a delta-ferrite content of ~12% resulting in a high resistance to hot cracking. The increased silicon content results in increased weld pool fluidity to give a smooth deposit appearance.

Precision layer winding technologies ensure smooth, trouble-free feeding.

CURRENT CONDITIONS:
DC (+)

SHIELDING GAS

Argon+2% O2 or Argon+0.5-5.0% CO2
Argon/O2 or Argon/CO2 Mixtures


TYPICAL CHEMICAL COMPOSITION (%)

C

Mn

Si

Cr

Ni

Mo

Cu

S

P

0.030 max

1.50 - 2.50

0.65 - 1.00

23.00 - 25.00

12.00 - 14.00

0.75 max

0.75 max

0.03 max

0.03 max



Typical All Weld Mechanical Properties

Yield Strength
N/mm2

Tensile Strength
N/mm2

Elongation
A5 (%)

Impact Energy
ISO - V (J) 20°C

≥ 350

≥ 520

≥ 30

≥ 100


The chemistry and all weld mechanical properties will vary with the type of shielding gas used. Recommended shielding gas is 98% Ar + 2% O2 or Ar + 2 – 3% Co2.

CLASSIFICATION
AWS A 5.9 : ER 309LSi
EN ISO 14343-A : G 23 12 LSi

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ABOUT US
Proline Welding Supplies (formerly Welding Supplies Ltd) offers a wide range of quality welding machines and consumables for the professional welder along with supporting advice and back up service. The owners have been servicing the engineering and welding industry for over 25 years and have built a strong reputation for providing technical know how and service that goes the extra mile!  ​LEARN MORE
 
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0800 699 353

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