Standard	Classification
AWS A5.18	ER70S-6
EN ISO 14341-A	G 3Si1
UNS (Weld Metal)	G3Si1

Note: ER70S-6 is suitable for CO₂ or Ar/CO₂ shielding gas and offers smooth, stable arc characteristics in all welding positions.

Element	C	Mn	Si	S	P	Fe
Content (%)	≤ 0.12	1.40–1.85	0.80–1.15	≤ 0.035	≤ 0.035	Remainder

The composition ensures excellent deoxidation, weld bead quality, and compatibility with standard mild steel.

Property	Value
Tensile Strength	≥ 480 MPa
Yield Strength	≥ 400 MPa
Elongation	≥ 22%
Impact Toughness	Good at ambient temperature

Mechanical properties may vary depending on welding parameters, base metal composition, and joint design.

Ø High Mn & Si content provides strong deoxidation and smooth weld bead appearance
Ø Excellent tolerance to rust and mill scale for reliable welding on slightly dirty surfaces
Ø Stable arc with minimal spatter improves welding efficiency
Ø Good mechanical properties and weld ductility for structural applications

Diameter:

• 0.8 mm / 0.9 mm / 1.0 mm / 1.2 mm / 1.6 mm

Packaging:

• 5 kg / 15 kg / 20 kg spools
• 250 kg / 350 kg drums

OEM packaging available on request

Ø Factory direct pricing with stable supply
Ø Strict quality inspection for consistent weld performance
Ø Smooth wire feeding and minimal spatter for efficient welding
Ø Export experience to 80+ countries
Ø Professional technical support and fast delivery

1. What is ER70S-6 welding wire used for?

ER70S-6 is mainly used for MIG welding of carbon steel. It is suitable for structural components, fabrication, and general industrial applications.

2. Can ER70S-6 be used on rusty steel?

Yes. Due to its higher silicon and manganese content, ER70S-6 performs well on rusty, oily, or mill scale-covered surfaces.

3. What shielding gas is used for ER70S-6?

It is typically used with CO₂ or Argon/CO₂ mixed gas.

4. What is the difference between ER70S-6 and ER70S-3?

ER70S-6 has higher deoxidizers, making it better for dirty or rusty steel, while ER70S-3 is more suitable for clean materials.