Aluminium ENAW-5154 Plates & Sheets (5154 - O, 5154 - H111)

Product Description

EN AW-5154 (AlMg3.5) is a versatile, non-heat-treatable aluminum-magnesium alloy. It is specifically designed for applications requiring a higher strength profile than the general-purpose 5754 (AlMg3), while maintaining the excellent corrosion resistance and weldability the 5000-series is known for.

In the European market, 5154 is frequently used for high-pressure applications and specialized marine components.

1. Comparing Tempers: 5154-O vs. 5154-H111

Because 5154 is a strain-hardening alloy, its properties are manipulated through cold working or annealing rather than heat treatment.

2. Technical Specifications (EN 485-2)

3. Key Performance Characteristics

🌊 Marine & Chemical Resistance

5154 offers excellent resistance to corrosion in seawater and industrial atmospheres. It is particularly effective against pitting, making it a reliable choice for long-term exposure in maritime environments.

🔠High-Integrity Welding

This alloy is highly weldable using MIG and TIG methods. The magnesium content ensures that the weld zone retains a high percentage of the base metal's strength. It is commonly paired with ER5183 or ER5356 filler wire.

ðŸ›ï Cold Formability

In both the O and H111 tempers, 5154 exhibits superior cold-forming characteristics. It can be bent to relatively tight radii, which is essential for manufacturing tanks, pressure vessels, and curved marine structures.

4. Typical Applications

• Pressure Vessels: Air tanks and gas storage cylinders where weld integrity is paramount.

• Marine Engineering: Small boat hulls, fishing equipment, and offshore structural components.

• Cryogenics: Equipment for handling and storing liquefied gases (it remains ductile at very low temperatures).

• Automotive: Welded structural frames and fuel tank assemblies.

5. Engineering Comparison: 5154 vs. 5154B

You may often see 5154B (3.3553) offered alongside standard 5154 (3.3535/3.3555).

• Standard 5154: The traditional choice for general marine and pressure applications.

• 5154B: A refined European version with a small Manganese (Mn) addition to further enhance fatigue strength and grain stability during welding.

Design Tip: If your application involves cyclic loading or high vibration (like a vehicle chassis or a boat hull), specifying the 5154B variant or the H111 temper will provide better fatigue resistance than the soft O temper.