Aluminum alloy 5454 in the H32 temper is a high-strength, non-heat treatable alloy known for its exceptional corrosion resistance and good formability. The “H32” temper designation signifies that the aluminum has been strain-hardened and stabilized, providing improved strength while maintaining excellent ductility and workability. Here’s a detailed overview of the 5454 aluminium alloy in the H32 temper:
1. Chemical Composition:
The 5454 alloy primarily consists of aluminum (Al), with key alloying elements including magnesium (Mg), manganese (Mn), and chromium (Cr). The composition contributes to the alloy’s enhanced corrosion resistance.
2. Mechanical Properties:
Tensile Strength: Typically ranging from 220 to 305 MPa (32 to 44 ksi), indicating good strength suitable for various applications.
Yield Strength: Generally around 130 to 240 MPa (19 to 35 ksi), depending on the thickness and manufacturing processes.
Elongation: Typically 12-20%, indicating good ductility and formability.
3. Corrosion Resistance:
The 5454 alloy demonstrates excellent resistance to corrosion, especially in marine and industrial atmospheres. It is well-suited for applications exposed to seawater and other aggressive environments.
4. Formability and Weldability:
The H32 temper provides good formability, allowing for various shaping processes like bending, drawing, and rolling.
It offers excellent weldability, making it suitable for welding and joining processes without a significant loss in strength or properties.
5. Applications:
Marine Applications: Due to its exceptional corrosion resistance, 5454 H32 is extensively used in the marine industry for boat hulls, decks, and other components exposed to seawater.
Automotive Industry: This alloy is utilized in the manufacture of vehicle structures, especially in the construction of tanker trailers and vehicle frames.
Pressure Vessels: 5454 H32 is suitable for pressure vessels and storage tanks where corrosion resistance is critical.
General Fabrication: It finds applications in various general fabrication processes where a combination of strength, corrosion resistance, and formability is required.
6. Additional Characteristics:
The alloy has a low tendency for welding cracks and excellent seawater corrosion resistance.
It maintains its properties at lower temperatures, making it suitable for cryogenic applications.
The 5454 aluminium alloy in the H32 temper is a versatile material with notable strength, excellent corrosion resistance, good formability, and weldability, making it an ideal choice for various applications, particularly in marine, automotive, and pressure vessel industries.