Aluminum 4047 Alloy (UNS A94047)

Topics Covered

Chemical Composition
Physical Properties
Other Designations


Aluminium / aluminum is widely used in several commercial, transportation and building applications. One of the key benefits of this silverfish white metal is its excellent corrosion resistance. Aluminum is also light weight, relatively strong, and has good thermal and electrical conduction.

Aluminium / aluminum 4047 alloy is a non-heat treatable wrought alloy type with good corrosion resistance. It is a filler alloy, and is quite similar to aluminium / aluminum 4043 except for the higher silicon content in aluminium / aluminum 4047 alloy. The higher silicon content provides improved fluidity during welding process with smooth finishes, as well as reduced shrinkage. It is suitable for elevated temperature operations.

The following datasheet will provide more details about aluminium / aluminum 4047 alloy.

Chemical Composition

The following table shows the chemical composition of aluminium / aluminum 4047 alloy.

Element Content (%)
Silicon, Si 11-13
Iron, Fe 0.80 max
Copper, Cu 0.30 max
Zinc, Zn 0.20 max
Manganese, Mn 0.15 max
Magnesium, Mg 0.10 max
Remainder (each) 0.05
Remainder (total) 0.15
Aluminum, Al Remainder

Physical Properties

The physical properties of aluminium / aluminum 4047 alloy are outlined in the following table.

Properties Metric Imperial
Density 2.6 g/cm3 0.096 lb/in3

Other Designations

Equivalent materials to the aluminium / aluminum 4047 alloy are AMS 4185 and ANSI/AWS A5.10 (ER & R).


Aluminium / aluminum 4047 alloy is chiefly used in the following areas: 

  • Laser welded covers for microwave integrated circuits
  • Housing
  • Welding filler wires
  • Liners
  • Leak-tight joints

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