Aluminium UNI P-AlMg3.5 Plates - UNS A95154 Plates, Sheets

Product Description

UNI P-AlMg3.5 and UNS A95154 are the Italian and North American designations for 5154 Aluminium. This is a medium-strength alloy from the 5000 series (Aluminium-Magnesium) specifically engineered for high corrosion resistance and structural integrity in welded assemblies.

1. Key Designations & Standards

While the naming conventions differ, these standards refer to the same metallurgical chemistry.

2. Chemical Composition (Typical %)

The 3.5% Magnesium content is the defining feature, providing a balance between the high ductility of 5052 and the high strength of 5083.

• Magnesium (Mg): 3.10 “ 3.90%

• Manganese (Mn): 0.10 “ 0.50%

• Chromium (Cr): 0.15 “ 0.35%

• Iron (Fe): 0.40% max

• Aluminium (Al): Remainder

3. Mechanical Properties

Properties are determined by the temper (O for annealed, H for work-hardened).

4. Key Engineering Characteristics

• Corrosion Resistance: Excellent, particularly in marine and industrial atmospheres. It is highly resistant to saltwater pitting.

• Weldability: Superior. It is one of the easiest aluminium alloys to weld using MIG or TIG processes, maintaining good joint strength.

• Formability: Very good in the annealed (O) state, making it suitable for deep drawing and complex bending.

• Machinability: Fair. It can be somewhat "gummy" like most 5000-series alloys; using high speeds and appropriate lubricants is necessary for a clean finish.

5. Common Applications

Because of its durability and weldability, it is a staple in "heavy-duty" light engineering:

• Marine: Pressure vessels for ships, small boat hulls, and saltwater piping.

• Storage: Tanks for chemicals (specifically hydrogen peroxide) and food-grade silos.

• Cryogenics: Used for low-temperature equipment as it does not become brittle at sub-zero temperatures.

• Infrastructure: High-strength wire mesh and industrial rivets.

6. Available Forms

• Plates: Generally refers to material over 6mm thick, used for structural fabrication and tank walls.

• Sheets: Thinner material used for cladding, panels, and smaller pressed parts.

• Blocks: Thick-cut sections used for machining manifold blocks or mounting plates where corrosion resistance is the priority.

Note on Temperature: Like all 5000-series alloys with >3% Magnesium, 5154 is not recommended for continuous service in temperatures exceeding 65C (150F) to avoid the risk of stress corrosion cracking.