Solid Wire
ER70S-G Welding Wire
ER70S-G is copper-coated low alloy solid wire, suitable for GMAW (MIG/MAG) and GTAW (TIG) welding processes.
ER70S-G
ER70S-G is copper-coated low alloy solid wire, suitable for GMAW (MIG/MAG) and GTAW (TIG) welding processes.
Features
• Balanced strength and good low-temperature impact toughness
• Stable arc, low spatter and smooth weld bead
• Versatile for various carbon steel and mild low alloy steel constructions
• Good usability for general structural fabrication
Diameter & Packaging
MIG：0.8 / 1.0 / 1.2 / 1.6 mm 5KG Spool /15KG Spool
TIG：2.0 / 2.4 / 3.2 mm 5kg plastic tube
Welding Parameters
Polarity: DC+ (DCRP, Direct Current Reverse Polarity)
Shielding Gas
MIG/MAG: Ar + 5%~25% CO₂, Flow rate: 15–20 L/min
TIG: Pure Argon (99.99%)
Preheat & Interpass Temperature
80~120 ℃ for plate thickness ≥12 mm or low ambient temperature
Typical parameters (Φ1.2 mm MAG): Current 180~240 A; Voltage 24~28 V
Deposited Metal Mechanical Properties
Tensile Strength: ≥485 MPa (70 ksi)
Yield Strength: ≥400 MPa
Elongation: ≥22 %
Charpy V-notch: ≥27 J
Applications
General machinery, steel buildings, transport equipment, carbon steel pipelines and various common structural components.
Welding Precautions:
• Clean oil, rust and scale on groove to prevent porosity.
• Not interchangeable with heat-resistant wires such as ER70S-A1.
• Suitable for ambient temperature service, not for high-temperature creep working conditions.
• Adopt proper preheating for thick plates to avoid cold cracking.