Solid Wire
ER80S-G Welding Wire
ER80S-G is a copper-coated general-grade low alloy high-strength solid wire for GMAW (MIG/MAG) and GTAW (TIG). It features stable mechanical properties, good...
ER80S-G
ER80S-G is a copper-coated general-grade low alloy high-strength solid wire for GMAW (MIG/MAG) and GTAW (TIG). It features stable mechanical properties, good crack resistance and excellent weldability, suitable for welding various unalloyed and low-alloy structural steels with medium strength requirements.
Features
• Versatile low-alloy composition provides stable tensile strength and good overall mechanical performance for general high-strength structures.
• Excellent welding operability with soft and stable arc, low spatter and smooth weld bead, reducing post-weld finishing work.
• Good anti-porosity performance and adaptability to common carbon and low-alloy steels with wide process tolerance.
• Reliable ductility and moderate low-temperature toughness, suitable for indoor and outdoor general structural welding scenarios.
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)
Shielding Gas
MIG/MAG: 100% CO₂ or Ar + 5%~20% CO₂, Flow rate: 15–20 L/min
TIG: Pure Argon (99.99%)
Preheat & Interpass Temperature
80~120 ℃ for thick sections or high-rigidity joints to prevent hydrogen-induced cracking.
Typical Φ1.2 mm MAG parameters: Current 150~220 A; Voltage 21~26 V
Deposited Metal Mechanical Properties
Tensile Strength: ≥550 MPa
Yield Strength: ≥460 MPa
Elongation: ≥16 %
Charpy V-notch: ≥27 J (Room temperature)
Applications
Suitable for welding general low-alloy high-strength structural steels, carbon manganese steels and ordinary pressure vessel steels. Widely applied in machinery manufacturing, steel structure engineering, container frames, general pipeline welding and non-critical pressure equipment.
Welding Precautions
• General-purpose low-alloy welding wire for common structural steels; not suitable for high-temperature resistant steel, cryogenic steel or stainless steel welding.
• Clean all oil, rust, oxide scale and moisture on welding grooves and base metal surfaces to avoid porosity and slag defects.
• Control preheat and interpass temperature properly for thick plates and multi-pass welding to ensure weld toughness and crack resistance.
• Perform stress relief heat treatment as required for heavy-thickness and high-load structural components.
• Avoid long-term service in high-temperature, ultra-low temperature and strong corrosive working environments.