Magmaweld MG 20 MIG/MAG ER70S-6 Welding Wire
Full technical description
Magmaweld MG 20 – Copper-Free MIG/MAG Welding Wire (ER70S-6 / G3Si1)
Magmaweld MG 20 is an unalloyed, non-copper-coated solid welding wire for MIG/MAG (GMAW) welding. Its special surface treatment gives a stable arc and very low spatter, especially with mixed shielding gases. That means less cleaning after welding, less anti-spatter spray, and longer life for your contact tips, liners and drive rolls.
Why choose MG 20?
- Very low spatter: less grinding and rework, cleaner welds
- Stable, smooth arc: consistent bead appearance with CO₂ and Ar/CO₂ mixes
- Built for robotic and automated welding: high performance with minimal cleaning
- Lower consumable costs: less wear on contact tips, liners and drive rolls
- Strong weld metal: good tensile strength and impact toughness down to -30°C
Technical specifications
| Classification AWS/ASME SFA-5.18 | ER70S-6 |
| Classification EN ISO 14341-A | G 42 3 C1 3Si1 / G 42 4 M21 3Si1 |
| Material no. (DIN) | 1.5125 |
| Typical wire analysis | C 0.07% · Si 0.90% · Mn 1.45% |
| Yield strength (CO₂, as welded) | 430 N/mm² |
| Tensile strength (CO₂, as welded) | 540 N/mm² |
| Elongation A5 | 29% |
| Impact toughness (Charpy V) | 90 J at -20°C · 70 J at -30°C |
| Shielding gas | CO₂ or Ar/CO₂ mixed gas |
| Polarity | DC+ |
Suitable for
Structural steels (S235JR–S355J2), boiler and pressure vessel steels (P235GH, P265GH, P295GH, P355GH), pipe steels (L210–L360NB) and cast steels (GE 200–GE 240).
Typical applications
Automotive and component manufacturing, machine building, steel furniture, steel construction and general fabrication, in both manual and robotic welding cells.
FAQ
What is Magmaweld MG 20?
A copper-free ER70S-6 solid wire for MIG/MAG welding of unalloyed and low-alloy steels, made for low spatter.
What is the difference between MG 20 and MG 2?
Both are ER70S-6 wires. MG 2 has a copper coating. MG 20 is copper-free with a special surface treatment, which reduces spatter and wear on torch parts.
Which shielding gas should I use?
100% CO₂ or an Ar/CO₂ mixed gas. Low spatter is most noticeable with mixed gas.
Can I use it on a welding robot?
Yes. It is a typical choice for robotic and automated welding, where cleaning time and torch wear matter most.
Visit on Appointment only.
On used equipment we give you 3 months warranty (With the exception of Trade-Ins) (see conditions).
We can offer you several types of machines such as:
New, Used, Mig/Mag, Co2, Tig, Pulse, Ac/Dc, Synergic, Water-cooled, Electrode and Plasma.
Examples of brands:
OTC, Migatronic, Miller, Fronius, Kemppi, Parweld, Tico, Helvi, Lorch, Rehm, Selco, Carl Cloos, Cebora, Esab, Saf, EWM, Kemper.
- All equipment has had a service and is in 100% working condition
- The pictures above show the actual machine.
- Test welding is of course no problem.
- A video of the machine in welding condition is possible
- Can be delivered with welding wire / welding helmet / PPE
- Equipment can be brought to you.
- Trade-in of your old machine is possible
- We are also the right address for the repair of your old welding machine.