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Mild Steel Welding Wire Er70s-6
Mild Steel Welding Wire Er70s-6 Mild Steel Welding Wire Er70s-6

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Mild Steel Welding Wire Er70s-6

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ER70S-6 Gas Shielded Welding Wire is a kind of mild steel copper coated welding wire, suitable for 100% CO2 and Argon& CO2 mixed gas protective welding with stable feasibility, good welding seams, less spatters and excellent welding process properties. When welding, the welding wire has fast melting speed, stable arc, less welding spatter, beautiful weld bead formation, strong anti-oxidation and corrosion resistance, low sensitivity of cladding metal pores, and good all-position welding process. Uses: used in large-scale hydraulic steel structures, ships, power stations, boilers and pressure vessels, petrochemicals.
  • 0.8mm-1.6mm

  • KYA

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KYA ER70S-6 Mild Steel MIG Welding Wire – High Carbon #45
   0.8–1.6mm Diameter • 5–20kg Spools • For CO2 & Ar/CO2 Shielded Welding

KYA ER70S-6 MIG welding wire spool         ER70S-6 copper coated welding wire         ER70S-6 welding wire packaging         ER70S-6 weld bead example
  • #45 high carbon steel – superior penetration & low spatter

  • Copper coated – smooth feeding & stable arc

  • Diameters 0.8–1.6mm – fits all MIG welders

  • Spools 5kg, 15kg, 20kg – D200/D270/D300 plastic or metal

  • 100% CO2 or Ar/CO2 mix – all-position welding

  • Low hydrogen, high crack resistance – ideal for structural steel

  • Applications: shipbuilding, bridges, pressure vessels, machinery

ER70S-6 Welding Wire Sizes & Packaging

Grade AWS Diameter Package
ER50-6 ER70S-6 0.8mm 5/15/20kg/spool
ER50-6 ER70S-6 0.9mm 5/15/20kg/spool
ER50-6 ER70S-6 1.0mm 5/15/20kg/spool
ER50-6 ER70S-6 1.2mm 5/15/20kg/spool
ER50-6 ER70S-6 1.6mm 5/15/20kg/spool
ER50-G ER70S-G 1.0–1.6mm 15/20kg/spool

ER70S-6 Chemical Composition (%)

C Mn Si P S Ni Cr Cu V
0.08 1.51 0.89 0.015 0.013 0.016 0.021 0.18 0.003

ER70S-6 Mechanical Properties

Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Impact Value (J) Test Temp Shielding Gas
545 452 29 91 -30°C CO2

Recommended Welding Parameters

Wire Diameter Current (A) Voltage (V) Reference Current (A)
0.8mm 50–120 15–22 100
1.0mm 70–180 18–24 150
1.2mm 80–350 18–34 280
1.6mm 140–500 20–42 350

Shielding Gas: 100% CO2 or Ar + 5–20% CO2

Applications

  • Shipbuilding & offshore structures

  • Bridge & heavy machinery

  • Pressure vessels & pipelines

  • Steel structure fabrication

  • Automotive & trailer frames

  • General construction & repair

  • Coal mining equipment

Frequently Asked Questions – ER70S-6 MIG Welding Wire

What is ER70S-6 welding wire used for?

Ideal for MIG welding mild & low-alloy steel in shipbuilding, bridges, pressure vessels, machinery & structural fabrication.

ER70S-6 vs ER70S-3 – which is better?

ER70S-6 has higher deoxidizers – better for rusty/dirty steel & low spatter with CO2 gas.

What shielding gas for ER70S-6 MIG wire?

100% CO2 or 75–95% Ar + CO2 mix – excellent arc stability & bead appearance.

Is ER70S-6 copper coated?

Yes – copper coating improves feedability & reduces tip wear.

What spool sizes for ER70S-6 welding wire?

5kg, 15kg, 20kg – D200, D270, D300 plastic/metal spools.

Can I get free samples of ER70S-6 MIG wire?

FREE 15kg sample spool shipped worldwide – you only pay freight.

About KYA Fasteners – China’s #1 Welding Wire Factory Since 2003

KYA is the leading OEM supplier of ER70S-6 & ER70S-G MIG welding wire to fabricators & manufacturers in USA, Canada, Europe, Middle East, and 50+ countries. Full range of diameters & finishes. Factory-direct pricing, fast delivery. Click for instant quote →

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