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Question:

what is marine grade aluminum?

i came across marine grade aluminum (grade 6082), somebody was telling it is a special grade, i checked in internet, there is nothing specific in marine grade 6082, every manufacturer can produce it. please clarify. thanks

Answer:

Al-Si Alloys 5xxx - Al-Mg Alloys 6xxx - Al-Mg-Si Alloys (like 6061,6063, and 6111) 5xxx alloys find wide application in Building construction,highways structures including bridges, storage tanks and pressure vessels, and marine applications. 6061 alloy finds broad use in welded structural members such as truck and marine frames, railroad cars,and pipelines.
Marine Grade Aluminum
This Site Might Help You. RE: what is marine grade aluminum? i came across marine grade aluminum (grade 6082), somebody was telling it is a special grade, i checked in internet, there is nothing specific in marine grade 6082, every manufacturer can produce it. please clarify. thanks
Marine grade means a specific alloy that resists corrosion, and does not deform easily. Alloys in the 5000 series as well as some 6000 are considered marine grade.
5000 and 6000 series aluminums are considered marine grade. Also called T5 and T6. T6 is harder but has shorter life. Yes it does wear out like an old 727. The old DC-3's never wear out because they were made with T3, but they do corrode much faster and are not as strong. T5 is my suggestion for almost anything unless you can use a thicker T3. With any of these remember that disssimilar metals will destroy each other (the harder metals eat the softer metals). So if the rest of the boat is T5, use T5 exclusively. Ask any Aviation Metalsmith and they will babble all day about it, LOL.

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