5052H-32 aluminum sheet for fuel tank is AL-Mg series alloy aluminum plate. Magnesium is the main alloying element in 5052H-32 aluminum sheet for fuel tank and it is the most widely used anti-rust aluminum. This alloy has high strength, especially with Fatigue strength: high plasticity and corrosion resistance, cannot be strengthened by heat treatment...
5052H-32 aluminum sheet for fuel tank is AL-Mg series alloy aluminum plate. Magnesium is the main alloying element in 5052H-32 aluminum sheet for fuel tank and it is the most widely used anti-rust aluminum. This alloy has high strength, especially with Fatigue strength: high plasticity and corrosion resistance, cannot be strengthened by heat treatment, good plasticity during semi-cold work hardening, low plasticity during cold work hardening, good corrosion resistance, good weldability, poor machinability, and polishing.
Aluminum-magnesium alloy also contains a small amount of manganese, chromium, beryllium, titanium and so on. Except for a small amount of solid solution, most of the manganese in the alloy forms MnAl6. The role of chromium in 5052H-32 aluminum sheet for fuel tank is similar to that of manganese, which improves the resistance to stress corrosion cracking, increases the strength of the base metal and the weld seam, and reduces the tendency of welding cracks, but its content generally does not exceed 0.35%.
Mechanical properties
Tensile strength (σb): 170～305MPa
Conditional yield strength σ0.2 (MPa)≥90
Elastic modulus (E): 69.3～70.7Gpa
The annealing temperature is: 345°C.
⑴Forming performance
①The alloy has good hot process plasticity. The forging and die forging temperature is 420~475°C, and the thermal deformation with a deformation rate of 80% is performed within this temperature range.
②The cold stamping performance is related to the alloy state. The cold stamping performance in the annealed (O) state is good, followed by the H32 and H34 states, and the H36/H38 state is not good.
⑵Welding performance
①The alloy has good performance in gas welding, arc welding, resistance welding, spot welding, and seam welding. Crystal cracks tend to appear during two argon arc welding. The brazing performance is still good, but the soft brazing performance is poor.
②The strength and plasticity of the weld are high, and the strength of the weld is 90%-95% of the strength of the base metal. However, the airtightness of the weld is not high. It is recommended to use 5A03 alloy as the solder, which can improve its airtightness and eliminate the tendency of cracks.
⑶Machining performance
The cutting performance of this alloy in the annealed state is not good, but it is improved in the cold hardened state.
