Aluminum 6040 Alloy (UNS A96040)

Topics Covered

Chemical Composition
Mechanical Properties


Aluminium / aluminum is a versatile light metallic element. The chemical symbol of this element is Al, and it belongs to the boron group. It is a widely used element due to its low density and excellent corrosion resistance.

Aluminium / aluminum 6040 alloy is a wrought alloy type with good corrosion resistance and excellent machinability. It is a lead-free alternative to aluminium/ aluminum 6262 alloy. This alloy also possesses excellent coating acceptance.

The following datasheet will provide more details about aluminium / aluminum 6040 alloy.

Chemical Composition

The following table shows the chemical composition of aluminium / aluminum 6040-T9 alloy.

Element Content (%)
Aluminum, Al 93.75-98.15
Magnesium, Mg 0.80-1.2
Silicon, Si 0.40-0.80
Tin, Sn 0.30-1.2
Copper, Cu 0.20-0.80
Iron, Fe ≤ 0.70
Zinc, Zn ≤ 0.25
Bismuth, Bi 0.15-0.70
Titanium, Ti ≤ 0.15
Chromium, Cr ≤ 0.15
Manganese, Mn ≤ 0.15
Remainder (each) ≤ 0.050
Remainder (total) ≤ 0.15

Mechanical Properties

The mechanical properties of aluminium / aluminum 6040-T9 alloy are tabulated below.

Properties Metric Imperial
Tensile strength (@diameter 12.7 mm/0.500 in) 324 MPa 47000 psi
Yield strength (@diameter 12.7 mm/0.500 in) 303 MPa 43900 psi
Elongation at break (@diameter 12.7 mm/0.500 in) 14% 14%
Shear strength 207 MPa 30000 psi
Hardness, Rockwell B 62 62

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