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Alloy 5083 Aluminum Plate Sheet 
    Alloy 5083 aluminum plate sheet have higher strength than 5052 plate and has exceptional thermal conductivity. In the tempered condition, it retains good formability due to excellent ductility. It is highly suitable for welding and can be hardened by cold work. Because Alloy 5083 exhibits excellent resistance to general corrosion, it is used in marine applications. Since Alloy 5083 is capable of withstanding extremely low temperatures without brittleness or loss of properties, it is especially suited to the cryogenic market.

    Alloy 5083 aluminum plate sheet is a non-heat-treatable 4½% magnesium, 0.15% chromium, 0.7% manganese alloy commonly available in flat rolled plate from a range of producing mills. Like all the 5000-series high magnesium alloys 5083 achieves a high strength by cold working,enabling a series of “H” tempers; 5083 is the
highest strength of any of these alloys.
Alloy 5083 aluminum plate sheet is best known as a plate for ship building. 
Corrosion Resistance
    Excellent in a wide range of atmospheric environments, in food processing and architectural applications. The principal application for 5083 is marine environments. The magnesium content is more than 3½% Mg, so this alloy can be susceptible to stress corrosion cracking, which limits its application temperature to below 65°C and also limits the amount of cold work to ¼ Hard.
Special intergranular corrosion and exfoliation corrosion tests are carried out to certify 5083 for marine applications .

Heat Treatment
    Alloy 5083 is not hardenable by heat treatment. It can be significantly hardened by cold work (eg by cold rolling) and various “H”tempers are produced – most commonly H32 (¼ Hard) or the similar strength marine tempers H116 and H321 – as well as the soft annealed Temper O condition.
The alloy spontaneously age-softens at room temperature immediately after cold work but will eventually reach a stable condition; all flat rolled mill products are supplied with stable properties. This is usually achieved by a stabilisation thermal treatment as the last operation which results in the H32 or H321 tempers. H112 temper is strain hardened as the final operation, again to quickly reach the required stable temper properties. To soften Alloy 5083 it can be annealed by heating to 345°C, hold until uniform temperature then cool; the rate of cooling is not important.
Excellent weldability by all standard electric and resistance methods; gas welding is not recommended. GMAW and GTAW are preferred and widely used to produce structural welds. When welding 5083 to itself or another alloy in the 5xxx series, the recommended filler metal is 5183. Other fillers are possible. Welding of strain hardened tempers will reduce strengths in the heat affected zones.

Machinability of 5083 aluminum plate sheet is poor due to its high strength.
Typical Applications
LNG ship construction
Pressure vessels
Storage tanks
Welded structures (high strength)
Armor plate
Drilling rigs
Plate for ship building, unfired welded pressure vessels, rail and other vehicles, various structural applications that make use of the high strength.

Alloy: 5083
Temper: O, H111, H112, H116, H321,H12,H14, H16, H18, H32, H34, H36
Thickness: 0.2mm--200mm
With: 500mm--2800mm
Length: 1000mm--12000mm
Surface: Mill finish, Bright finish, paper interleaved, one side film, both sides film.

Chemical Properties
Alloy Si Fe Cu Mn Mg Cr Ni Zn Ti Ga V Others Aluminium
Each Total
5083 0.4 0.4 0.1 0.4-1.0 4.0-4.9 0.05-0.25 - 0.25 0.15 - - 0.05 0.15 Remainder