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Aluminum-Magnesium Wire for Marine Applications

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Product Description

Aluminum filler metals belonging to the 5XXX series (Al-Mg), specifically selected for their high resistance to saltwater and atmospheric corrosion in marine and coastal environments. The Magnesium (Mg) content, typically ranging from 3.0% to 5.1%, ensures the formation of a tough, self-healing oxide layer that is highly effective against chloride-induced pitting. This wire must be manufactured with strict controls on Cu content (≤0.10%) to prevent galvanic corrosion within the weld deposit, guaranteeing long-term service life in high-humidity and submerged conditions.

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20+ Years Experience

Over two decades of aluminum alloy wire production expertise

International Certifications

DB, CE, ABS, DNV, CCS and other authoritative certifications

200MT Monthly Capacity

Large-scale production with consistent quality

Global Export

Exporting to over 30 countries worldwide

Introduction

The Aluminum-Magnesium (5XXX) alloy family is the backbone of marine aluminum construction due to its inherent resistance to saltwater. Our Al-Mg wire is the standard consumable for shipyards and marine fabricators worldwide. We provide guaranteed Mg content within the optimal range for the required blend of corrosion resistance and structural strength, ensuring compliance with global maritime standards. This wire is specifically tailored for joining the 5083, 5052, and 5456 base metals that dominate modern aluminum boat and ship construction.

Specification

Alloy Series5XXX (Al-Mg)
Key AlloysER5356 (General), ER5183 (High Strength)
Critical ImpurityCopper (Cu≤0.10%)
Corrosion TypePitting, Crevice Corrosion (Chloride attack)
ComplianceABS, DNV GL, Lloyd's Register (General Type Approval)

Applications and Solutions

  • Ship Hulls and Superstructures: Welding primary load-bearing structures of ferries, yachts, and commercial vessels.

  • Marine Fittings: Fabrication of ladders, railings, masts, and other fixtures exposed to saltwater spray.

  • Coastal Infrastructure: Welding aluminum components for bridges, docks, and seaside barriers.

  • Repair and Overhaul: Use in shipyards for routine maintenance and repair of 5XXX base metal vessels.

FAQ

  • Q: What is the primary role of Magnesium in marine welding wire?A: Mg acts as a solution strengthener and, more importantly, forms a dense, resistant aluminum oxide/hydroxide layer that repels chloride ions, thus preventing pitting corrosion in saltwater.
  • Q: Can I use ER5356 to weld 6061 on a boat?A: Yes. ER5356 is the recommended filler for welding 6061 in a marine environment because it provides the necessary corrosion protection, which ER4043 does not.
  • Q: Are 5XXX fillers safe for hot marine environments?A: Caution is needed. 5XXX alloys can become susceptible to Stress Corrosion Cracking (SCC) if sustained service temperatures exceed 65∘C (150∘F).

Advantages and Core Features

  • Inherent Corrosion Resistance: High Mg content provides a weld deposit that is naturally passive and highly stable in chloride environments.

  • Good Ductility and Toughness: The weld deposit remains ductile, absorbing shock and vibration common in marine service without cracking.

  • High Strength: Offers excellent strength, particularly ER5183, which is necessary for high-speed vessel hull structures.

  • Excellent Weldability: Provides stable arc and good puddle control, suitable for positional welding often required in shipbuilding.

Material Selection Guide

For marine applications, always select a 5XXX (Al-Mg) alloy. Use ER5356 for general purpose and 6061 joining. Use ER5183 for 5083 base metals to maximize strength. Avoid ER4043 due to poor saltwater corrosion resistance.

About Us

Coming From China, Marketing To The World.

Hangzhou Kunli welding materials Co., Ltd. is China Aluminum-Magnesium Wire for Marine Applications Manufacturers and Wholesale Aluminum-Magnesium Wire for Marine Applications OEM/ODM Suppliers. We are located in the industrial zone of Puyang Town, Xiaoshan District, Hangzhou, Zhejiang Province. It is a high-technology enterprise specializing in the research, development and manufacturing of high-performance. The company has more than 20 years of aluminum alloy wire production experience, with international advanced manufacturing equipment, complete testing equipment,stable production process and strict quality control system.
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