ER309LSI

ER309LSI is similar in composition to ER309L with a higher silicon content, which produces weld beads that are exceptionally smooth due to good wetting action.  309LSI is a great choice when cosmetic appearance is important.

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AWS Class: ER309LSI Certification:  AWS A5.9/ A5.9M: Alloy:  ER309LSI AWS/ASME SFA A5.9

 

Welding Position:

F, V, OH, H

Current:

MIG-DCEP

TIG-DCEN

 

Typical Properties (as welded)

Yield, ksi: 64 Tensile Strength, ksi: 87 Elongation%, min: 41

 

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Additional resources:
uPVC Sliding Doors: Your Top Questions Answered
Cost of machining aluminum versus steel
10 Facts You Should Know about Structural Geogrid Mesh

 

 

 

 

Typical Wire Chemistry as per AWS A5.9 (single values are maximum)

C Cr Ni Mo Mn Si P S Cu 0.03 23.0-25.0 12.0-14.0 0.75 1.0-2.5 0.65-1.00 0.03 0.03 0.75

 

 

Typical Welding Parameters Diameter Process Volt Amps in (mm) .023 (0.6) GMAW 14-19 30-85 .030 (0.8) GMAW 15-20 45-125 .035 (0.9) GMAW 16-22 60-150 .045 (1.14) GMAW 17-22 90-210 1/16&#; (1.6) GTAW 12 80-150 3/32&#; (2.4) GTAW 12 150-250 1/8&#; (3.2) GTAW 12 200-375

 

 

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