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WARNING: This product can expose you to chemicals including Chromium (hexavalent compounds), which is known to the State of California to cause cancer, and Carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

.035" ER70S-4 Murematic® S4+ Carbon Steel MIG Wire 44 lb Fiber Spool

Airgas Part #:LINEDM23346393

Manufacturer Part #:EDM23346393

$3.99 /US Pound
Package Size Options
$175.56 Spool 44 US pound / Spool
$14,220.36 Pallet 3,564 US pound / Pallet

Item Details

  • Lincoln Electric® Murematic® S4+ ER70S-4 Carbon Steel MIG Welding Wire offering trouble-free performance is suitable for thin gauge or dirty/rusty plate. It finds application in industrial, farming, construction, mining equipment and also where accurate/consistent wire feed are required. General purpose wire with a .035" is coated with copper for longer contact tip life and better arc-starting characteristics. A flat weld bead profile is used to reduce defects, scrap or re-work while increased levels of silicon and manganese render greater cleaning action. Multi-pass welds on thick steel sections with CO2 or argon based shielding gas and the wire comes in a 44 lb fiber spool.


  • Fluid puddle, good wash in at weld toes and flat weld beads minimize defects, scrap or re-work
  • Consistent weld deposit chemistry and procedures from package to package improve quality and save time
  • Highly resistant to copper flaking, which can clog liners and contact tips
  • Copper coating provides superior arc starting characteristics, for long contact tip life
  • Microguard® surface treatment is designed to provide smooth trouble free feeding performance
  • Well suited for applications where accurate and consistent wire feed are necessary
  • Manufactured under a quality system certified to ISO9001 requirements
  • Manufactured under a global environmental quality system certified to ISO14001 requirements


  • AWS A5.18/A5.18M: 2001: ER70S-4
  • ASME SFA 5.18: ER70S-4


  • Industrial, farming, construction and mining equipment
  • Applications which require greater cleaning action through increased levels of silicon and manganese compared to the levels provided by a typical ER70S3 wire
  • Single pass welds on sheet metal applications
  • Multiple pass welds on thick steel sections
  • For welding on base material with light to medium mill scale
  • All position welding

Product Attributes


» .035"

AWS Classification

» ER70S-4


» 44 lb

Trade Name

» Murematic® S4+


» Fiber Spool