Four categories of commonly used marine application of aluminium
Marine application of aluminium has many characteristics such as high accuracy, long service life, easy processing, and recyclability. It is a mold variety that has been very popular among enterprises in recent years. In the marine aluminum plate series, the 5 and 6 series alloys with medium hardness and the 2 and 7 series alloys with strong hardness are mainly used for shipbuilding. Enterprises can choose according to different needs.
Series 2 aluminum plates are aluminum-copper alloys, and the main alloying element is copper. Copper is an important alloying element with solid solution strengthening effect. After adding copper to aluminum alloy, the aging property is obviously enhanced, and it has a very obvious strengthening effect on the alloy. The best effect is when the copper content is 4%-6% .
The 5 series aluminum plate belongs to the aluminum-magnesium alloy. In addition to the marine application of aluminium, the aluminum-magnesium alloy is also the most commonly used aluminum plate in the automotive industry. Magnesium has a significant strengthening effect on aluminum alloys. For every 1% of magnesium in the alloy, the tensile strength increases by 34MPa. Aluminum-magnesium alloy has medium strength, strong plasticity, good weldability and rust resistance.
Series 6 aluminum plates are aluminum-magnesium-silicon alloys, and the main alloying elements are magnesium and silicon. The addition of silicon to the alloy can make the aluminum alloy have excellent castability and corrosion resistance. The alloy formed by the three elements of aluminum-magnesium-silicon in a certain proportion has excellent performance and is the main material for manufacturing high-end precision molds. one.
The 7 series marine application of aluminium belongs to aluminum-zinc-magnesium alloy, the main alloying elements are zinc and magnesium. Adding zinc to the alloy alone has no obvious strengthening effect on the alloy, and will cause problems such as stress corrosion cracking; but AlZn2 formed by two elements of zinc and magnesium has a strong strengthening effect on the alloy, and the alloy has a tensile strength. Strength and yield strength increase as the proportion increases. The 7 series aluminum plate is also an important material for the aviation and aerospace industry.