2025-06-04
It is applied to the hull shell, support structure, supporting facilities, pipelines, etc. It can reduce the overall weight of the ship, increase the traveling speed and resist seawater corrosion. The main used aluminum alloys include aluminum-copper alloy (with poor seawater corrosion resistance, hindering development), aluminum-magnesium alloy (used for hull shell, water pump ducts, etc., with grades such as 5083, 5086, 5456, 5466, etc.), and aluminum-silicon alloy (with moderate structural strength and good fluidity, used for manufacturing high-pressure valves, cylinder blocks, etc.).