Aluminium 5083

Aluminium 5083

Steel Friend Aluminium Alloy 5083 stands out for its exceptional performance in challenging environments. Renowned for its resistance to corrosion from seawater and industrial chemicals, Alloy 5083 maintains remarkable strength even after welding. While it boasts the highest strength among non-heat treatable alloys, caution is advised against use in temperatures exceeding 65°C. This detailed data sheet delves into various aspects of Alloy 5083, including applications, supplied forms, fabrication, welding, chemical compositions, and mechanical properties.


Aluminium Alloy 5083 is prized for its resilience in extreme conditions, making it a preferred choice for applications requiring durability and corrosion resistance. From pressure vessels to shipbuilding, Alloy 5083 finds versatile usage across industries.


Steel Friend Aluminium Alloy 5083 finds application in a diverse range of sectors, including:

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

Supplied Forms

Steel Friend Aluminium Alloy 5083 is available in the following forms:

  • Shate
  • Plate

Alloy Designations

Aluminium Alloy 5083 corresponds to various designations, including:

  • GM41
  • A95083
  • AIMg 4.5 Mn
  • Al Mg 4.5 Mn 0.7

Temper Types

The most common tempers for Alloy 5083 include:

  • O: Soft
  • H111: Some work hardening imparted by shaping processes but less than required for H11 temper
  • H32: Work hardened by rolling then stabilized by low-temperature heat treatment to quarter-hard


Alloy 5083 exhibits varied characteristics for fabrication, as outlined below:

  • Solderability: Poor
  • Weldability - Gas: Average
  • Weldability - Arc: Excellent
  • Weldability - Resistance: Excellent
  • Brazability: Poor
  • Workability - Cold: Average
  • Machinability: Poor


For welding Alloy 5083 to itself or alloys within the same sub-group, the recommended filler metal is 5183. Alternatively, fillers such as 5356 and 5556 are suitable for welding applications.

Chemical Compositions

The chemical composition of Steel Friend Aluminium Alloy 5083 is detailed below:

Element% Present
Manganese (Mn)0.40 - 1.00
Iron (Fe)0.40 Typical
Copper (Cu)0.10 Typical
Magnesium (Mg)4.00 - 4.90
Silicon (Si)0.40 Typical
Zinc (Zn)0.25 Typical
Titanium (Ti)0.15 Typical
Aluminium (Al)Balance

Mechanical Properties

Mechanical properties at room temperature for Steel Friend Aluminium Alloy 5083 are as follows:

Proof Strength145 MPa
Tensile Strength300 MPa
Shear Strength175 MPa
Hardness Vickers75 HV

Reference Data for Some Physical Properties

For reference, data for some physical properties of Alloy 5083 are provided below:

Density2.65 Kg/m3
Melting Point570°C
Thermal Expansion25 x 10-6 /K
Modulus of Elasticity72 GPa
Thermal Conductivity121W/m.K
Electrical Resistivity0.058 x 10-6 Ω.m

Steel Friend Aluminium Alloy 5083 emerges as a robust material with outstanding corrosion resistance and mechanical properties, catering to demanding applications across multiple industries.

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