5182 H18 aluminum alloy is a magnesium (Mg) containing alloy belonging to the 5xxx series in a fully hardened (full hard) strain-hardened temper condition. This alloy is particularly preferred in applications requiring high corrosion resistance and maximum strength. It shows high resistance to seawater, humid atmospheres, and chemical environments. Thanks to the H18 temper, maximum strength is achieved while formability is significantly limited. Compared to pure aluminum, it offers much higher strength.

In terms of strength, 5182 H18 provides significantly higher strength compared to H111 and H32 tempers of the same alloy. Compared to 5052 H38 alloy, it shows similar strength levels but generally offers better corrosion resistance. When compared to 5083 alloy, it provides lower strength but advantages in surface quality and thin sheet applications. Compared to 6061-T6 alloy, it may reach similar strength levels, but offers much better corrosion resistance.

In terms of machinability, 5182 H18 alloy is moderate; it is not very suitable for machining but can be processed in sheet form. Its bending capability is very limited and there is a high risk of cracking due to high hardness. Therefore, it is not suitable for complex forming operations. It is generally preferred in applications requiring minimal forming or flat usage.

In terms of coating capability, 5182 H18 performs well and is suitable for painting, lacquering, and surface coating processes. However, in most applications, additional coating is not required due to its natural corrosion resistance. In terms of vibration response, it provides lower damping capacity due to high hardness but ensures structural stability.

Its weldability is possible but requires attention due to high hardness, and strength reductions may occur after welding. The 5182 H18 alloy is widely used in applications such as beverage cans (especially lids), thin sheet applications, packaging industry, and lightweight structures requiring high strength. It stands out especially in applications requiring high strength, surface quality, and corrosion resistance.