ER5754 Aluminum Welding Wire

ER5754 aluminum alloy welding wire is a high-performance filler material designed for welding 5xxx series aluminum alloys (such as 5083, 5754, etc.), which complies with the American Welding Society (AWS) A5.10 standard. Its chemical composition is highly matched with the parent material, and it has excellent corrosion resistance and welding processability. It is widely used in shipbuilding, marine engineering, chemical containers and other fields.

Core characteristics
Chemical composition optimization
Magnesium content: 3.0%-3.8% (typical value), ensuring that the strength and corrosion resistance of the weld are consistent with the parent material.
Low iron, low silicon: reduce the negative impact of impurities on weld toughness and avoid thermal cracking tendency.
Mechanical properties
Tensile strength: ≥280 MPa (specific value adjusted according to process).
Elongation: ≥12% (to ensure weld plasticity).
Hardness: HB 80-100, balancing strength and processability.
Corrosion resistance
The weld is resistant to seawater and industrial atmospheric corrosion and is suitable for harsh environments.
Verified by salt spray test (such as ASTM B117), the corrosion rate is less than 5% of the parent material.
Welding processability
Stable arc: less spatter under DC reverse connection (DCEN), beautiful weld formation.
Good molten pool fluidity: suitable for all-position welding (flat welding, vertical welding, overhead welding).

Application scenarios
Shipbuilding
Hull structure, deck, bulkhead welding, meet the certification requirements of classification societies such as DNV and ABS.
Typical cases: aluminum alloy yacht hull splicing, LNG tanker liquid cargo tank sealing welding.
Marine engineering
Offshore platform, oil storage tank, seawater pipeline welding, resist seawater corrosion and stress corrosion cracking.
Chemical and food industry
Corrosion-resistant container and pipeline system welding, in accordance with FDA and ASME standards.
Transportation
High-speed train body and automobile lightweight structural parts welding, taking into account strength and weight reduction requirements.
Architecture and decoration
Aluminum alloy curtain wall, door and window frame welding, ensure smooth appearance and structural safety.

Recommendations for use
Pre-welding preparation
Clean the surface of the parent material (remove oil and oxide film), and make a groove (V-shaped or U-shaped).
Preheat thick plates (>25mm) to 100-150℃ to reduce the risk of thermal cracks.
Welding parameter optimization
Use pulse MIG welding (if necessary) to improve the welding quality of thin plates.
Control the interlayer temperature ≤150℃ to avoid coarse grains.

Post-weld treatment
Grind the weld excess height to the same level as the parent material, and perform X-ray or ultrasonic flaw detection (according to the standard).
Perform stress relief heat treatment if necessary (such as T6 state parent material).

Quality certification and standards
Comply with international standards such as AWS A5.10, ISO 18273, EN ISO 14175, etc.
Provide material certification (MTC) and third-party test reports (such as SGS, TÜV).