Aluminium, Commercial AlloyAluminium 5083 H321 Sheet & Plate

The highest strength non heat treatable marine grade aluminium alloy, for excellent seawater corrosion resistance.

5083 aluminium plate is known for exceptional performance in extreme environments. 5083 is highly resistant to attack by both seawater and industrial chemical environments.

Mechanical properties shown are for H321 temper.

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Plate can be cut to customer requirements. Please contact your local Service Centre for further details.

4000 x 2000 & 6000 x 2000 plates are 3.2 certified to

  • LRS
  • DNV
  • BV
  • ABS
Sheet SizeThicknesses
4000 x 20003.0mm - 25.0mm
6000 x 20003.0mm - 40.0mm
If you do not see what you are looking for, please contact your local service centre with your specific requirements.

Related Specifications

Alloy 5083 corresponds to the following standard designations and specifications but may not be a direct equivalent:

  • GM41
  • A95083
  • AlMG4.5Mn
  • Al Mg4.5 Mn0.7

Temper Types

The most common tempers for 5083 aluminium are:

  • H321


Chemical Composition


  • Shipbuilding
  • Rail cars
  • Vehicle bodies
  • Tip truck bodies
  • Mine skips and cages
  • Pressure vessels


  • Exceptional strength after welding
  • Exceptional performance in extreme environments
  • Not recommended for use in temperatures above 650C
  • Marine grade aluminium alloy

Additional Information


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