Aluminum Alloy Properties

Aluminum alloy properties have three categories that define the physical, chemical and mechanical properties. Within these properties of aluminum alloys there are certain characteristics that are considered.

Physical Properties

For physical aluminum alloy properties these characteristics are density, melting point, electrical conductivity, and coefficient of thermal expansion.

ALLOY 343 AL 360 AL 383 AL 6061T-6
Density (lb./ci) N/A 0.095 0.099 0.098
Melting Point (°F) N/A 1105 1080 1206
Electrical Conductivity
 (% IACS)		 N/A 29 23 43
Coefficient of Thermal Expansion (68-212°F) (µin/in/°F x 10E-6) N/A 11.6 11.7 13.1


Mechanical Properties

For mechanical aluminum alloy properties these characteristics are tensile strength, yield strength, elongation, shear strength and hardness.

ALLOY 343 AL 360 AL 383 AL 6061T-6
Tensile Strength (ksi) 35 44 45 45
Yield Strength (ksi) 20 25 22 40
Elongation (% in 2") 6 4 3.5 17
Shear Strength (ksi) N/A 28 N/A 28
Hardness (Brinell) N/A 75 75 30


Chemical Properties

For chemical aluminum alloy properties, the various elements and chemicals used in the creation of the alloy are what determine each alloy’s physical and mechanical properties.

ALLOY 343 AL 360 AL 383 AL 6061T-6
Zinc (Zn) 1.2 to 1.9 0.1 max. 3.0 max. 0.25 max.
Magnesium (Mg) 0.1 max. 0.4 to 0.6 0.1 max. 0.8 to 1.2
Copper (Cu) 0.5 to 0.9 0.6 max. 2.0 to 3.0 0.15 to 0.4
Iron (Fe) 0.9 max. 2.0 max. 1.3 max. 0.7 max.
Chromium (Cr) 0.1 max. - 0.15 max. .04 to 0.35
Silicon (Si) 6.7 to 7.7 9.0 to 10.0 9.5 to 11.5 0.4 to 0.8
Manganese (Mn) 0.5 max. 0.1 max. 0.5 max. 0.15 max.
Tim (Sn) 0.5 max. 0.1 max. 0.15 max. -
Nickel (Ni) - 0.5 max. 0.3 max. -
Aluminum (Al) Remainder Remainder Remainder Remainder

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