5083

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Grade 5083 aluminium is a non-heat treatable alloy which has additions of magnesium, manganese and chromium that contribute to the material’s exceptional performance in extreme environments. Grade 5083 offers a high resistance to attack in both seawater and industrial chemical environments.

Commonly used in plate form Alloy 5083 also retains its good strength levels after welding, and offers the highest strength of the non-heat treatable alloys. This grade is ideal for lower temperature applications, however, 5083 is not recommended for use in temperatures exceeding of 65°C.

Chemical Composition

Aluminium     

Rem

Silicon

0.4% max

Copper

0.1% max

Iron             

0.4% max

Manganese   

0.4 – 1.0%

Magnesium   

4.0-4.9%

Zinc

0.25% max

Titanium       

0.15% max

Chromium     

0.05-0.25%   

Total Others  

0.15% max

Related Specifications

BS1470: 5083

N8 / NE8

A95083

GM41

Al Mg4.5 Mn0.7

AlMG4.5Mn

Key Features

  • Good Mechanical Properties
  • Very good corrosion resistance in marine and chemical environments
  • Good weldability

Typical Physical Properties

Melting Range                                      

580-645°C

Density                                               

2.67 g/cm³

Thermal conductivity                    

109 W/m°K

Thermal expansion coefficient                 

24.5 x 10-6

Electrical Conductivity                            

28.3 IACS

Electrical resistivity                               

0.061 microhm m

Modulus of elasticity                              

71 GPa

Fabrication Properties

Cold Formability                                   

Average

Machinability                                        

Poor

Brazing                                               

Poor

Soldering                                            

Poor

Inert Gas Welding                                 

Excellent

Resistance Welding                               

Excellent

Typical Applications

Alloy 5083 is typically used in many industries including components for shipbuilding, rail cars, vehicle bodies, tipper truck bodies, mine skips and cages and pressure vessels.

This technical information is given by Holme Dodsworth Metals without charge and the user shall employ such information at their own discretion and risk. For more detailed technical advice on temper selection, fabrication, joining, machining, physical and mechanical data please contact us as space does not permit the listing of every feature of the material.

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