Aluminum 3103 Alloy (UNS A93103)

Topics Covered

Chemical Composition
Physical Properties
Thermal Properties
Other Designations


Aluminium / aluminum is a soft and lightweight metal which is a good electrical conducto and also has sound absorbing, shock absorbing, and anti-rusting properties.

Aluminium / aluminum 3103 alloy is a non-heat treatable wrought alloy with very good weldability.

The following datasheet will provide more details about aluminium / aluminum 3103 alloy.

Chemical Composition

The following table shows the chemical composition of aluminium / aluminum 3103 alloy.

Element Content (%)
Aluminum, Al ≤ 96.3
Manganese, Mn 0.90 - 1.5
Silicon, Si ≤ 0.50
Iron, Fe ≤ 0.70
Magnesium, Mg ≤ 0.30
Zinc, Zn ≤ 0.20
Copper, Cu ≤ 0.10
Zirconium, Zr + Titanium, Ti ≤ 0.10
Chromium, Cr ≤ 0.10
Remainder (each) ≤ 0.050
Remainder (total) ≤ 0.15

Physical Properties

The physical properties of aluminium / aluminum 3103 alloy are outlined in the following table.

Properties Metric Imperial
Density 2.73 g/cm³ 0.0986 lb/in³
Melting point 655°C 1211°F

Thermal Properties

The thermal properties of aluminium / aluminum 3103 alloy are tabulated below.

Properties Metric Imperial
Thermal conductivity 160 W/mK 1109 BTU in/hr.ft².°F

Other Designations

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Equivalent materials to aluminium / aluminum 3103 alloy are listed below:

  • Alcoa-190
  • BA 60
  • BS N3
  • Aluman-100
  • Alcan GB-3S


Aluminium / aluminum 3103 alloy has good cold workability. Gas welding and arc welding can be carried out easily. Resistance welding is also possible. It has excellent brazability and solderability. Machinability of this alloy is acceptable.


Aluminium / aluminum 3103 alloy is chiefly used in the following areas:

  • Heat exchangers
  • Air condition evaporators
  • Aircraft and military components
  • Motor vehicle radiators
  • Freezer linings
  • Cladding alloy
  • Office equipment
  • Tubing and piping
  • Pressure vessels.

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