Corrosion-Resistant Aluminum Alloy Wire for Offshore

Specification

Applications and Solutions

• Topsides Modules: Welding structural framework for accommodation, equipment skids, and pipe racks to minimize platform top-heaviness.

• Helidecks: Fabrication of high-strength landing decks exposed to the continuous, highly corrosive marine atmosphere.

• Subsea Housings (Ambient Temp): Welding protective aluminum housings and enclosures for subsea equipment and sensors.

• Offshore Crane and Jib Repair: High-strength repair of boom and jib components exposed to heavy dynamic loads.

FAQ

• Q: Why is ER5183 preferred over ER5356 for offshore?A: ER5183 offers higher tensile strength and typically better fatigue performance than ER5356, making it the preferred choice for primary, high-stress structural welding on offshore platforms.

• Q: Is there any risk of hydrogen cracking in offshore aluminum welding?A: Aluminum does not suffer from hydrogen embrittlement like steel. However, hydrogen causes porosity. Due to the high humidity offshore, filler metal and base metal must be kept impeccably clean and dry to prevent porosity.

• Q: Are specialized welding processes used offshore?A: Yes. Low heat input processes like Pulsed MIG or CMT are often preferred to minimize distortion and reduce the softening of the HAZ in large, expensive 5083 plates.