5083 Aluminium Alloy

5083 Aluminium Alloy

5083 aluminium is a non-heat-treatable alloy with magnesium and traces of manganese and chromium. It is highly resistant to attack by seawater and industrial chemicals. Like all the 5000-series high magnesium alloys, 5083 can be significantly hardened by cold work and retains exceptional strength after welding. Machinability of 5083 is poor due to its high strength.

5083 alloy is commonly available in various “H” tempers such as H32 (¼ Hard) or the similar strength marine tempers H116 and H321 – as well as the soft annealed Temper O condition.

Typical applications of 5083 aluminium alloy are shipbuilding, railroad cars, coachwork, pressure vessels, and various structural applications that benefit from the high strength.

5083 aluminium alloy is produced in plate, sheet, strip, forgings, tube and bar.

Typical Physical Properties of 5083 Aluminium Alloy Value
Density 2650 kg/m3
Melting Point 570�C
Modulus of Elasticity 72 GPa
Electrical Resistivity 0.058x10-6 O.m
Thermal Conductivity 121 W/m.K
Thermal Expansion 25x10-6 /K
Typical Mechanical Properties of 5083 and Different Tempers Specification Tensile Strength (MPa) Yield Strength, 0.2% Proof (MPa) Min. Elongation (all gauges) Min. Elongation (5.0-12.5 mm) Min. Elongation (6.31-80.00 mm)
5083-O B209M 270-345 115-200 16
5083-H32 B209M 305-385 215 min 12
5083-H116 B928M 305 min 215 min 12-Oct
5083-H321 B928M 305-385 215 min 10
Chemical Composition of 5083 Aluminium Alloy Content %
Si 0.4
Fe 0.4
Cu 0.1
Mn 0.4-1.0
Mg 4.0-4.9
Zn 0.25
Ti 0.15
Cr 0.05-0.25
Al Balance
Fabrication response for 5083 Aluminium Alloy Rate
Workability � Cold Average
Machinability Poor
Weldability � Gas Average
Weldability � Arc Excellent
Weldability � Resistance Excellent
Brazability Poor
Solderability Poor
Alloy Designation US US Federal European UK Other
5083 AMS 4056 5083-0 Sheet and Plate QQ-A-200/4 5083 Extruded bar, tube WS 3.3547� BS N8 Alloy 5083 Sheet and Plate AlMg4.5Mn
5083 QQ-A-250/6 5083 Sheet and Plate A-G4.5MC