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Al-Mg Alloy Welding Wire for Marine Use

-- Steady & Reliable Manufacturer --

Seawater-Grade Metallurgy

Marine-grade Al-Mg wire is specifically engineered to resist the aggressive electrochemical attacks of seawater. By adding Manganese (Mn) and Chromium (Cr), the metallurgy enhances the stability of the protective oxide layer. This wire is the primary choice for joining boat-building alloys like 5083 and 5456. The formulation ensures that the weld deposit remains cathodic to the base metal, effectively preventing galvanic and pitting corrosion in submerged and splash-zone conditions.

DB Certification CE Certification ABS Certification DNV Certification CCS Certification

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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

Mastering the Maritime Environment

We are a certified supplier to the global maritime industry, providing the "Marine-Standard" for aluminum joining. Our Al-Mg marine wire is designed to withstand the brutal reality of ocean service. We recognize that in shipbuilding, structural failure at sea is not an option. Our products undergo rigorous salt-spray and intergranular corrosion (IGC) testing to ensure that your vessels remain seaworthy and structurally sound for decades in the world's harshest waters.

Marine Tech Specs

CertificationABS, DNV, Lloyd's Register
Alloy BaseAl-Mg 4.5% - 5.2%
Corrosion TestASTM G67 Pass (Low mass loss)
Impact Value≥20 J at −196∘C
Conductivity27%−31% IACS

Marine Usage Scenarios

  • Fast Ferries: High-strength welding of lightweight hulls for high-speed passenger transit.

  • Yacht Superstructures: Joining aesthetic and structural aluminum components for luxury vessels.

  • Workboat Hulls: Fabrication of durable, impact-resistant hulls for fishing and patrol boats.

  • Solution: Eliminating "Weld-Line Corrosion" by using our high-purity ER5183 wire with strictly controlled iron (Fe) content.

Professional FAQ

  • Q: Which wire is best for 5083 ship plates?A: ER5183 is the industry standard, as it matches the high magnesium content of the base plate.
  • Q: Does marine wire require special cleaning?A: Yes, our wire is "Double-Shaved" to remove all surface contaminants that could trap moisture.

Performance Features

  • Saltwater Immunity: Superior resistance to pitting and stress corrosion cracking (SCC).

  • High Toughness: Excellent energy absorption for hulls subject to wave slamming.

  • Radiographic Quality: Consistently achieves Grade A X-ray results in critical hull joints.

  • Low Spatter: Clean welding characteristics even in humid maritime environments.

Selection Guide

For Primary Hull Structures, use ER5183. For Railings and Fittings, ER5356 offers the best balance of cost and ease of use.

About Us

Coming From China, Marketing To The World.

Hangzhou Kunli welding materials Co., Ltd. is China Al-Mg Alloy Welding Wire for Marine Use Manufacturers and Wholesale Al-Mg Alloy Welding Wire for Marine Use 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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