NOVOFIL
SG1
AWS ER70S-3
MIG/MAG welding wire for mild steels
NOVOFIL
SG3
- MIG/MAG
- ER70S-6
- G 42 3 C G4Si1 / G 46 4 M21 4Si1
NOVOFIL SG3 is a copper coated gas metal arc welding wire in 15 kg spools or 250 kg drums. It is particularly designed for semi-automatic and full-automatic GMAW applications.
NOVOFIL SG3 is suitable for GMA welding of un-alloyed structural steels with a tensile strength up to 540 N/mm², ship plates and fine-grained C-Mn steels. It gives high-strength weld metal at working temperatures varying between −50 and 450 °C. It contains higher Si and Mn than SG2 welding wire. Increased silicon improves wettability.
100% CO₂ or 80% Ar + 20% CO₂ are used for gas shielding.
Diameters [mm]0.60 · 0.80 · 0.90 · 1.00 · 1.20 · 1.60
CoatingsCopper coated · Bronze coated · Copper free
Shielding gasesM21 · C1
ApprovalsDB · DNV-GL · TÜV · CE
Classification
- AWS A5.18: ER70S-6
- EN ISO 14341-A: G 42 3 C G4Si1 / G 46 4 M21 4Si1
Shielding gases
- M21: Ar + 15–25% CO₂
- C1: 100% CO₂
Packaging
| ⌀ mm | 0.60 | 0.80 | 0.90 | 1.00 | 1.20 | 1.60 |
|---|---|---|---|---|---|---|
| Spool | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Drum | – | ✓ | ✓ | ✓ | ✓ | ✓ |
Spool weight: 15 kg – 16 kg – 18 kgDrum weight: 250 kg – 300 kg – 450 kg
Chemical analysis of the wire [%]
| C | Mn | Si | P | S | Ni | Cr | Mo | Cu | |
|---|---|---|---|---|---|---|---|---|---|
| min | 0.06 | 1.60 | 0.80 | – | – | – | – | – | – |
| max | 0.14 | 1.90 | 1.20 | 0.025 | 0.025 | 0.15 | 0.15 | 0.15 | 0.30 |
Mechanical properties of the weld metal
| Gas M21 | Gas C1 | |
|---|---|---|
| Yield strength Re | 510 MPa | 450 MPa |
| Tensile strength Rm | 580 MPa | 550 MPa |
| Elongation A5 | 26% | 26% |
| Impact test KV (−40 °C) | 70 J | – |
| Impact test KV (−30 °C) | 60 J | – |
| Impact test KV (−20 °C) | 100 J | 60 J |
| Impact test KV (+20 °C) | 140 J | 100 J |
Welding parameters
Current type and polarity: DC (+)
| Diameter [mm] | Current [A] | Voltage [V] | |
|---|---|---|---|
| Short arc | 1.00 | 80–175 | 18–28 |
| Short arc | 1.20 | 120–200 | 18–30 |
| Short arc | 1.60 | 225–480 | 28–40 |
Welding positions
- PAflat
- PBhorizontal-vertical
- PChorizontal
- PEoverhead
- PFvertical up
- PGvertical down
Materials to be welded
- General structural steels
- DIN: St 44, St 44-2, St 44-3, St 52, St 52-3EN: S275, S355DIN: St 37-4, St 44-4, St 52-4EN: P235TR2 – P355T2DIN: St 50-2, St 60-2, St 70-2EN: E295, E335, E360DIN: C 10 – C 35; Ck 10 – Ck 35EN: C10 – C35
- Fine grained steels
- DIN: StE 255 – StE 420EN: S255N – S420NDIN: WStE 255 – WStE 355EN: P255NH – P355NH
- Elevated temperature steels
- DIN: St 35-8, St 45-8EN: P235G1TH – P255G1TH
- Boiler & pressure vessel steels
- DIN: HI, HIIEN: P235GH, P265GHDIN: 17 Mn 4, 19 Mn 6EN: P295GH, P355GH
- Ship plates
- DIN: A, B, C, D, EDIN: AH32 – EH36
- Cast steels
- DIN: GS-38, GS-45, GS-52EN: GE200, GE240, GE260
- Pipe materials
- DIN: StE 210-7 – StE 415-7EN: L210 – L415NBDIN: X42, X46, X52, X60 (API 5LX)
Data according to the NOVOFIL S.p.A. technical data sheet. Values are for information only and may vary depending on welding conditions.