Alro shares 5083 - an aluminum alloyed with magnesium and traces of manganese and chromium. It is highly resistant to assault by seawater and industrial chemical compounds. A non-consumable tool is inserted while in the workpiece that introduces deformation. It revolves in stir movement and pushes laterally with the workpiece. https://simmal.com/5083-aluminium-alloy-properties-applications-benefits/