Solid Wire
ER70S-2 Welding Wire
ER70S-2 is copper-coated low alloy solid wire, suitable for GMAW (MIG/MAG) and GTAW (TIG) welding processes.
ER70S-2
ER70S-2 is copper-coated low alloy solid wire, suitable for GMAW (MIG/MAG) and GTAW (TIG) welding processes.
Features
• Low hydrogen weld deposit, excellent low-temperature impact toughness
• Stable arc, low spatter, good slag release and smooth weld bead
• Suitable for carbon steel structures, works well under low-temperature service conditions
• Good resistance to cold cracking for medium and thick steel plates
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 24~28V
Deposited Metal Mechanical Properties
Tensile Strength: ≥485 MPa (70 ksi)
Yield Strength: ≥400 MPa
Elongation: ≥22 %
Charpy V-notch: ≥27 J @ -29℃
Applications
Storage tanks, ship hulls, machinery frames, pipeline engineering, offshore mild steel structures and carbon steel components requiring low-temperature impact performance.
Welding Precautions:
• Keep wire dry and avoid moisture absorption.
• Clean oil, rust and scale on groove before welding.
• Not applicable for high-temperature creep service conditions.
• Select proper preheat temperature for thick plates to avoid cold cracks