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I. What are the differences between 7075 and 6061 aluminum alloys? 1. Different compositions: The 7075 series contains zinc as its main alloying element, with a concentration of up to 6%. The 6061 series is primarily alloyed with magnesium and silicon, with relatively low overall composition proportions. 2. Different strengths: In terms of strength, 7075 is quite strong – its strength is comparable to that of steel – but it’s only slightly stronger; it’s just a bit stronger than 6061. 3. Different prices: 7075 is the lightest and strongest aluminum alloy, but it is also extremely expensive. On the other hand, 6061 is the most common aluminum alloy – it is lightweight, has good strength, and is cost-effective. 4. Different levels of practicality: 7075 contains a high proportion of other metals, which makes welding and processing it more difficult; due to this high proportion, it is generally not suitable as a material for frames. Due to the low proportion of other metals in 6061, its strength can be increased and its wind resistance can be reduced through various shaping and treatment methods; moreover, the weight can be lowered by performing tube drawing three times. Overall, 6061 is a better material. II. Differences between zinc alloys and aluminum alloys 1. Different raw materials: Zinc alloys are alloys based on zinc to which other elements are added; common alloying elements include aluminum, copper, magnesium, cadmium, lead, titanium, etc., in the case of low-temperature zinc alloys. Zinc alloys are manufactured by melting and are used as materials in die-casting and stamping processes. Aluminum alloys are a general term for alloys based on aluminum; the main alloying elements include copper, silicon, magnesium, zinc, and manganese, while the secondary alloying elements include nickel, iron, titanium, chromium, lithium, etc. 2. Different application ranges: Zinc alloys can be divided into cast zinc alloys and wrought zinc alloys based on their manufacturing processes. They can be used in die-casting for instruments, as coatings on automobile parts and utility poles to provide corrosion protection through galvanizing, and to enhance resistance to high-temperature corrosion in the piping of boiler water walls through galvanizing treatment. Aluminum alloy is the most widely used non-ferrous structural material in industry, and it is extensively applied in aviation, aerospace, automobile manufacturing, shipbuilding, the chemical industry, and more. 3. Different melt temperatures during processing: Zinc alloy is at over 400 degrees ； Aluminum alloy: over 700 degrees. 4. Different processing equipment: Although both use die-casting machines, they are not interchangeable at all. Article summary: The above covers everything regarding the differences between 7075 and 6061 aluminum alloys; I hope it will be helpful to everyone.