AK-ER5556A Aluminum Alloy Welding Rod for High-Strength Marine and Structural Applications.
A high-strength aluminum-magnesium-manganese alloy rod designed for welding 5083 and 6XXX series base metals with improved crack resistance and corrosion performance.
Product Overview
AK-ER5556A is a high-strength aluminum-magnesium-manganese alloy welding rod used in TIG and MIG welding processes. It is formulated for applications requiring higher weld strength than the 5356 alloy, particularly when joining 5083 and 6XXX series base metals.
The rod delivers good ductility and improved resistance to cracking in welded joints, making it suitable for demanding structural and marine environments where corrosion resistance is critical.
Application: Control elements for higher weld strength than 5356 alloy; good duc tility and improved crack resistance;high corrosion resistance for marine applications.
Key Benefits
Higher Strength Than 5356 Alloy.
AK-ER5556A provides greater tensile strength in the weld metal compared to the standard 5356 alloy, making it suitable for high-stress structural applications.
Improved Crack Resistance
The alloy composition enhances resistance to solidification and hot cracking, reducing the risk of defects in high-stress or thick-section welds.
High Corrosion Resistance
The chemical makeup supports excellent performance in marine and outdoor environments, maintaining integrity under exposure to saltwater and humid conditions.
Good Ductility and Formability.
The deposited metal exhibits 19 percent elongation, allowing for good deformation without fracture during service or fabrication.
Where It Is Used
- Welding of high-strength aluminum alloys such as 5083 and 6XXX series.
- Marine structures and components exposed to saltwater.
- Structural elements requiring high strength and crack resistance.
- Fabrication of control components and pressure vessels in corrosive environments.
Who It Is For
- Welding consumable distributors supplying aluminum welding rods for industrial and marine markets.
- Shipyards and marine fabricators working with 5083 and 6XXX base metals.
- Structural fabricators requiring high-strength, crack-resistant welds in aluminum components.
Problems It Solves
- Achieving higher weld strength than 5356 alloy when joining 5083 and 6XXX base metals.
- Reducing the risk of cracking in high-stress or thick-section aluminum welds.
- Providing a single rod option for high-strength, corrosion-resistant welding in marine and structural applications.
Specifications
Published by the factory for AK-ER5556A (TIG / MIG). Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification | EN ISO 18273 S Al 5556A AWS A5.10 ER5556A (AlMg5Mn) GB/T 10858 SAl 5556A |
| Element | Content |
|---|---|
| Si | 0.25 |
| Fe | ≤0.40 |
| Cu | ≤0.10 |
| Mn | 0.60-1.0 |
| Mg | 5.0-5.5 |
| Zn | ≤0.20 |
| Al | Bal |
| Be | ≤0.0003 |
| Cr | 0.05-0.20 |
| Ti | 0.05-0.20 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 305 |
| Yield Stress (MPa) | 185 |
| Elongation (%) | 19 |
Technical Features
- Alloy composition: 5.0-5.5% Mg, 0.60-1.0% Mn, 0.05-0.20% Cr, 0.05-0.20% Ti, ≤0.0003% Be, ≤0.40% Fe, ≤0.20% Zn, ≤0.10% Cu, ≤0.25% Si, balance Al.
- Tensile strength of at least 305 MPa, yield stress of at least 185 MPa, elongation of at least 19 percent.
- Supplied to EN ISO 18273 S Al 5556A, AWS A5.10 ER5556A (AlMg5Mn), and GB/T 10858 SAl 5556A standards.
- Suitable for TIG and MIG welding processes.
Use Guide
- Select rod diameter based on base metal thickness and joint configuration. Use standard TIG and MIG parameters for aluminum alloys.
- Clean the base metal surface thoroughly before welding to remove oil, oxide, and contaminants.
- Maintain proper shielding gas flow (typically pure argon or argon-helium mix) to prevent porosity and oxidation.
- Avoid excessive heat input to minimize distortion and cracking risk, especially in thin sections.
How It Compares
AK-ER5556A offers higher strength and improved crack resistance compared to the 5356 alloy, which is commonly used for general-purpose aluminum welding. While 5356 provides good ductility and ease of use, it has lower tensile strength and is more prone to cracking in high-stress joints. AK-ER5556A is better suited for structural and marine applications where strength and durability are critical. For non-corrosive environments requiring maximum ductility, 5356 may still be preferred.
Related Grades
Other welding and brazing rods in the same family.
AK-ER5556A (TIG / MIG) Questions
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