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WARNING: This product can expose you to chemicals including Nickel (Metallic), which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

.045" ER309 Arcos 309/309L Stainless Steel MIG Wire 30 lb 12" Spool

Airgas Part #:AH2S309LDYS30

Arcos Alloys

Manufacturer #:S309LD-Y-S30-1B


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$13.51 /US Pound
Package Size: 1 US pound
$13.51 US Pound
$13.51 US Pound
$405.30 Spool 30 US pound / Spool

Typically in Stock

Item Details

  • Arcos 309/309L is generally used for welding similar alloys in wrought and cast form. This wire is also utilized to weld Type 304 and similar base metals, where severe corrosion conditions exist, as well as in dissimilar welds for joining 304 to carbon steel or the clad side of 304 clad steels.


  • MIL-E-19933E (309 only)
  • ABS


  • Arcos 309/309L joins Types 304,347, 321 and 316 and duplex stainless steels to mild and low alloy steels
  • This electrode can also provide a buffer layer prior to surfacing for 308L for corrosion resistant overlays and is often used for dissimilar welds because of its tolerance for dilution


  • Protect yourself and others read the safety data sheet prior to using this product.

Product Attributes

AWS Classification

» ER309 » ER309L


» .045"

Trade Name

» Arcos 309/309L


» 30 lb

Spool Diameter

» 12"