Aluminum 5383 Alloy (UNS A95383)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties


Aluminium / aluminum is a versatile engineering material that has a huge global market. Aluminium / aluminum alloys are widely used in building and architecture, packaging, transport, and electrical conductors.

Aluminium / aluminum 5383 alloy is a wrought alloy type with improved corrosion resistance and increased fatigue strength. Weldability and formability of this alloy is easy using conventional methods. The following datasheet will provide more details about aluminium / aluminum 5383 alloy.

Chemical Composition

The following table shows the chemical composition of aluminium / aluminum 5383 alloy.

Element Content (%)
Aluminum, Al 91.9 - 95.3
Magnesium, Mg 4- 5.2
Manganese, Mn 0.70 – 1
Zinc, Zn ≤ 0.40
Silicon, Si ≤ 0.25
Iron, Fe ≤ 0.25
Chromium, Cr ≤ 0.25
Copper, Cu ≤ 0.20
Zirconium, Zr ≤ 0.20
Titanium, Ti ≤ 0.15
Remainder (each) ≤ 0.050
Remainder (total) ≤ 0.15

Physical Properties

The physical properties of aluminium/aluminum 5383 alloy are outlined in the following table.

Properties Metric Imperial
Density 2.66 g/cm³ 0.0961 lb/in³
Melting point 585 - 641°C 1090 - 1190°F

Mechanical Properties

The mechanical properties of aluminium / aluminum 5383 - H321/H116 alloy are tabulated below.

Properties Metric Imperial
Tensile strength 305 MPa 44200 psi
Yield strength 220 MPa 31900 psi
Elongation at break 10% 10%
Shear modulus 26.4 GPa 3830 ksi
Poisson’s ratio 0.33 0.33

Thermal Properties

The thermal properties of aluminium / aluminum 5383 alloy are tabulated below.

Properties Metric Imperial
Thermal expansion co-efficient (@20-100°C/68-212°F) 23.8 µm/m°C 13.2 µin/in°F
Thermal conductivity 117 W/mK 812 BTU in/hr.ft².°F


Aluminium / aluminum 5383 alloy is primarily used in the marine industry. The following are some of the key uses of the alloy in the marine field:

  • It is used wherever a stronger welded aluminum structure is required e.g. from hulls to superstructures
  • For smaller boats (<50m) for improved scantlings, which indirectly save structural weight on patrol craft
  • For increasing strength on work boats
  • For added interior space in luxury yachts
  • For larger vessels (>50m) to benefit from the increased strength and improved fatigue features
  • For cruise ship superstructures to be lighter with improved stability.

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