The general standard for
LY12 aluminum tube is AMS-QQ-A-250/4 (non-aluminum); AMS-QQ-A-250/5 (aluminum), the alloy element of LY12 is copper, which is called hard, with High strength and good machinability, but poor corrosion resistance.Application area Aircraft structure (skin, skeleton,
LY12 (non-aluminum); AMS-QQ-A-250/5 (aluminum), 2024 alloy element is copper, known as hard aluminum, with high strength and good machinability, but corrosion resistance Poor.Copper 3.8-4.9 manganese 0.3-0.9 magnesium 1.2-1.8 chromium 0.10 zinc 0.25 titanium 0.15 (5) other (3) 0.15 aluminum (4)
Physical properties of
LY12 aluminum tube for aircraft
LY12 is a typical hard aluminum alloy in the aluminum-copper-magnesium system. Its composition is reasonable and its comprehensive performance is good. This alloy is produced in many countries and is the largest used in hard aluminum. The alloy is characterized by high strength and a certain heat resistance, and can be used as a working part below 150 °C. The temperature is higher than 125 ° C, the strength of 2024 alloy is better than 7075Gold is still high. The forming properties are better in the hot state, annealing and new quenching conditions, and the heat treatment strengthening effect is remarkable, but the heat treatment process is strict. Poor corrosion resistance,However, it can be effectively protected by coating with pure aluminum; cracks are easily generated during welding, but it can be welded or riveted by special techniques. Widely used in aircraft structures, rivets, truck hubs, propeller components and other structural components.
