Solid Wire
ER80S-D2 Welding Wire
ER80S-D2 is a copper-coated molybdenum-alloy low carbon solid wire for GMAW (MIG/MAG) and GTAW (TIG). It is designed for welding low-alloy high-strength carb...
ER80S-D2
ER80S-D2 is a copper-coated molybdenum-alloy low carbon solid wire for GMAW (MIG/MAG) and GTAW (TIG). It is designed for welding low-alloy high-strength carbon steels, providing outstanding strength, ductility and excellent low-temperature impact toughness.
Features
• Molybdenum alloyed composition delivers stable tensile strength and excellent resistance to high-temperature creep and fatigue.
• Superior low-temperature impact performance and crack resistance, suitable for harsh low-temperature structural welding.
• Stable arc performance, minimal spatter, uniform bead formation and smooth weld surface for easy cleaning.
• Excellent feeding stability and wide process adaptability, ideal for all-position welding and high-efficiency production.
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
100~150 ℃ for thick plates or high-restraint joints to prevent hydrogen-induced cold cracking.
Typical Φ1.2 mm MAG parameters: Current 150~210 A; Voltage 21~25 V
Deposited Metal Mechanical Properties
Tensile Strength: ≥550 MPa (80 ksi)
Yield Strength: ≥470 MPa
Elongation: ≥17 %
Charpy V-notch: ≥54 J (-30℃)
Applications
Suitable for welding low-alloy high-strength steels and molybdenum steels including 16Mo3, A516 Gr70 and P355GH. Widely used in pressure vessels, boiler pipelines, machinery structural parts, offshore engineering and general high-strength structural welding.
Welding Precautions
• Designed for low-alloy high-strength and molybdenum steel welding; not applicable for stainless steel or high-chrome heat-resistant steel.
• Thoroughly remove oil, rust, scale and moisture on the groove and base metal surface to eliminate porosity and slag inclusions.
• Control preheat and interpass temperature properly to reduce hydrogen brittleness and avoid welding cold cracks.
• Perform appropriate post-weld heat treatment as required by pressure vessel and heavy structural components to relieve welding residual stress.
• The continuous service temperature of welded joints shall not exceed 450 ℃ for stable mechanical performance.