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5083 H116 is the premium marine grade aluminium alloy, offering the highest level of saltwater corrosion resistance among common aluminium alloys. It is specifically designed for boat hulls, structural marine frameworks, and offshore fabrication where long-term durability in harsh environments is critical.
Compared to 5052, the 5083 alloy provides higher tensile strength and better performance in sustained saltwater exposure — making it the standard specification for professional boat builders and marine engineers in New Zealand.
SD Aluminium stocks 5083 H116 plate for immediate availability. For lighter-duty marine applications, consider our aluminium sheet range including 5052 marine-grade flat sheets.
