Aluminium, Commercial Alloy5251 Aluminium H22 Sheet & Plate

Medium strength aluminium alloy with good ductility.

Aluminium alloy 5251 has good formability and is ideal for general sheet metal work where higher mechanical properties are required.

Mechanical properties shown are for H22 condition.

Talk to an expertDownload PDF


Sheet SizeSheet ThicknessesPlate Thicknesses
2000 x 10001.0mm - 1.5mm4.0mm - 6.0mm
2500 x 12501.0mm - 3.0mm4.0mm - 6.0mm
3000 x 12503.0mm4.0mm - 6.0mm
If you do not see what you are looking for, please contact your local service centre with your specific requirements.

Related Specifications

Alloy 5251 corresponds to the following standard designations and specifications, although may not be a direct equivalent:

  • Al Mg2
  • Al 2.0Mg 0.3Mn

Temper Types

The most common tempers for 5251 aluminium are:

  • H22
  • H24
  • H26
  • O


Chemical Composition


  • Boats
  • Panelling and pressings
  • Marine structures
  • Aircraft parts
  • Vehicle panels
  • Furniture tubing
  • Silos
  • Containers


  • Work hardening rapidly
  • Readily weldable
  • High corrosion resistance particularly in marine environments

Additional Information


Find your local Service Centre

An extensive UK network of Service Centres, backed up by a central distribution facility.

  • Experienced multi-product specialists

  • In-house state of the art processing facilities

  • Large fleet of bespoke delivery vehicles

RBL Truck Retouched