Aluminium alloys in marine applications
semis are made from 5000 series (Sealium 5083 5086 5754 etc.) while extrusions are made from 5000 series ( Sealium 5083) and 6000 series (6082 6005A 6061 etc.) (1). They have been chosen for their level of mechanical properties their ease of assembly by welding and their excellent corrosion resist-ance in marine environments.
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