LINEAR THERMAL EXPANSION COEFFICIENT OF ALUMINUM ALLOYS



Aluminum and its alloys have relatively large linear thermal expansion coefficient compared to other metals. Room temperature linear thermal expansion coefficient values for some of the aluminum alloys are given in the following chart.

Linear Thermal Expansion Coefficient Values for Aluminum Alloys
Aluminum Alloy Coefficient of Thermal Expansion
10-6 (°C)-1 10-6 (°F)-1
Aluminum Alloy 1100 23.6 13.1
Aluminum Alloy 2024 22.9 12.7
 Aluminum Alloy 6061 23.6 13.1
 Aluminum Alloy 7075 23.4 13.0
Aluminum Alloy 356.0 21.5 11.9

Reference: