The 5083 h321 vs h116 are the two tempers that 5083 marine grade aluminum plate used. How to choose between 5083 h321 and 5083 h116? What are the difference between 5083 h116 and 5083 h321? Don’t worry, we will tell you answers in details. The shipbuilding aluminum plates in 5083 h321 and h116 have good corrosion resistance and are more suitable for the underwater environment of the ocean than H111 and H112. Although the temperature of 5083 H116 aluminum plate and 5083 H321 aluminum plate is slightly different during the production process, the corrosion resistance is obviously better than other states. Therefore, at present, most shipbuilding enterprises also purchase products of 5083H116 aluminum plate and 5083H321 aluminum plate.

CCS "Materials and Welding Rules" pointed out that - H116: aluminum alloy with a magnesium content of not less than 3.0%, the state after anti-corrosion treatment. H321: the state of an 5083 aluminum alloy with a magnesium content of not less than 3.0% after work hardening and stabilized treatment. Therefore, we only need to find out the relevant definitions of anticorrosion treatment and hardening treatment (you can also refer to the national standard GB), and we can also see—H1×—hot rolling, strong tension; H2×—continuous casting and rolling, strong tension , partial toughening; H3×—after internal stress treatment, stable performance; H4×—after painting or coating; H×2—25% hardness treatment; H×4—50% hardness treatment; H× 6—75% hardness treatment; H×8—more than 90 hardness treatment.

Difference of 5083 h321 vs h116: H116: Applicable to products made of 5000 series marine grade aluminumalloys with magnesium content ≥ 4%. These products have specified mechanical properties and exfoliation corrosion resistance performance requirements. In summary, H116 has good corrosion resistance, while H321 has good corrosion resistance and more stable performance. The mechanical properties of 5083 h321 and 5083 h116 are similar, and both have good corrosion resistance after coating. As far as I know, both are acceptable for sea-going ship construction, and more mechanical properties need to be provided by the supplier.