Flux-Cored Wire
E71T-9C-J Flux-Cored Welding Wire
E71T-9C-J is a cost-effective quality rutile flux cored wire designed for allpositions welding with 100% CO2 shielding for excellent CVN impact performance a...
E71T-9C-J
E71T-9C-J is a cost-effective quality rutile flux cored wire designed for allpositions welding with 100% CO2 shielding for excellent CVN impact performance at -40°C.
This wire offers optimum welding performance under soft and stable arc with less fume and spattering. Produce smooth bright and flat weld bead with easy slag removal.
Welding Parameters (Φ1.2mm)
Flat/Horizontal: 160~240A, 25~30V
Vertical/Overhead: 130~190A, 23~27V
Wire stick-out: 15–20 mm
Interpass temperature ≤250℃. Preheat to 50~100℃ for plates ≥16mm or welding in low temperature to prevent cold cracking.
Shielding Gas
Standard: 100% CO₂
Alternative: 75~80% Ar + 20~25% CO₂ mixture for less spatter and improved toughness
Recommended gas flow rate: 18–25 L/min.
Wind shielding is required for outdoor welding.
Typical Mechanical Properties (As-Welded)
Tensile Strength: 490–670MPa
Yield Strength: ≥390MPa
Elongation: ≥22%
Impact Energy: ≥27J @ -40℃; Typical value 65–95J @ -40℃ for premium quality
Note: Impact values are slightly lower with 100% CO₂ shielding. Use Ar+CO₂ mixture for better toughness.
Features
· Rutile slag system with moderate solidification rate, suitable for all-position welding (flat, horizontal, vertical and overhead).
· Soft and stable arc, smooth metal transfer and low spatter.
· Thin slag, easy removal, good weld wetting and smooth bead appearance.
· Consistent excellent low-temperature impact property, stable toughness under high heat input.
· Tolerant to slight rust and oxide scale on workpieces.
· Polarity: DC+ (DCRP).
Base Materials
Low carbon steel, Q235, SS400, A36 and general carbon-manganese steel structures.