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ER70S-6 1.2mm CO2 Gas Shielded Solid MIG Welding Wire 250kg

ER70S-6 1.2mm CO2 Gas Shielded Solid MIG Welding Wire 250kg Featured Image
  • ER70S-6 1.2mm CO2 Gas Shielded Solid MIG Welding Wire 250kg
  • ER70S-6 1.2mm CO2 Gas Shielded Solid MIG Welding Wire 250kg
  • ER70S-6 1.2mm CO2 Gas Shielded Solid MIG Welding Wire 250kg
  • ER70S-6 1.2mm CO2 Gas Shielded Solid MIG Welding Wire 250kg
  • ER70S-6 1.2mm CO2 Gas Shielded Solid MIG Welding Wire 250kg
  • ER70S-6 1.2mm CO2 Gas Shielded Solid MIG Welding Wire 250kg

ER70S-6 1.2mm CO2 Gas Shielded Solid MIG Welding Wire 250kg

Short Description:

ER70S-6 CO2 gas shielded solid MIG welding wire, 1.2mm, 250kg spool. AWS A5.18 ER70S-6 / GB ER50-6 / ISO G42 4 M21 3Si1. Stable arc, low spatter, easy slag removal, excellent -40C impact toughness. CCS LR BV ABS TUV CE certified. For shipbuilding, pressure vessels and steel structures.


  • Brand: Longterm
  • Model Number: ER70S-6
  • Type: CO₂ Gas Shielded Solid MIG Welding Wire
  • Standard: AWS A5.18 / GB/T 8110 ER50-6 / EN ISO 14341-A G42 4 M21 3Si1
  • Diameter: 1.2 mm
  • Material: Copper-coated low carbon steel solid wire
  • Shielding Gas: CO₂ or Ar+CO₂ Mixed Gas (M21)
  • Certification: CCS, LR, BV, ABS, NK, KR, RS, TÜV, DB, CE
  • Application: Shipbuilding, Pressure Vessels, Construction Machinery, Steel Structures
  • Package: 250 kg / spool

    • Product Detail

    Product Tags

    ER70S-6 CO₂ Gas Shielded Solid MIG Welding Wire

    ER70S-6 is a copper-coated solid welding wire designed for CO₂ or Ar+CO₂ mixed gas shielded welding. It features stable arc, low spatter, excellent slag detachment and beautiful weld bead appearance. With high impact toughness at low temperature (-40°C), it is widely used in shipbuilding, pressure vessels, construction machinery and steel structure fabrication.

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    Key Features:

    • • AWS A5.18 ER70S-6 / GB/T 8110 ER50-6 / EN ISO 14341-A G42 4 M21 3Si1
    • • Stable arc, minimal spatter, easy slag removal
    • • Excellent low-temperature toughness: 73J / 85J / 71J at -40°C
    • • Approved by CCS, LR, BV, ABS, NK, KR, RS, TÜV, DB and CE

    Item Detail
    Grade / 牌号 JQ.MG50-6
    AWS Classification ER70S-6
    GB Classification ER50-6 (G49A4UC16)
    ISO Classification G42 4 M21/C1 3Si1
    Diameter 1.2 mm
    Package 250 kg / spool
    Shielding Gas CO₂ or Ar+CO₂ mixed gas (M21)
    Welding Position Flat, Horizontal Fillet, Vertical Up/Down, Overhead

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    FAQ

    Q1: What shielding gas should I use with ER70S-6 welding wire?

    ER70S-6 can be used with pure CO₂ or Ar+CO₂ mixed shielding gas (ISO M21 / C2). With pure CO₂, you get deeper penetration and lower cost; with Ar+CO₂ mixed gas, you get a smoother arc, less spatter and a brighter weld finish. The choice depends on your joint design and surface finish requirements.

    Q2: What base metals is this wire suitable for?

    ER70S-6 is designed for welding low-carbon mild steel and high-strength low-alloy (HSLA) steels commonly used in shipbuilding, structural steel, pressure vessels and construction machinery. It is NOT recommended for stainless steel, aluminum or cast iron.

    Q3: What certifications does your welding wire carry?

    Our ER70S-6 wire is approved by CCS, LR, BV, ABS, NK, KR, RS, German TÜV, DB and CE. Mill test certificates (MTC) are provided with every shipment. We can also provide the specific certificate number upon your request.

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