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7049 Aluminum vs. R05240 Alloy

7049 aluminum belongs to the aluminum alloys classification, while R05240 alloy belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 7049 aluminum and the bottom bar is R05240 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
150
Elongation at Break, % 6.2 to 7.0
25
Poisson's Ratio 0.32
0.36
Shear Modulus, GPa 27
57
Tensile Strength: Ultimate (UTS), MPa 510 to 530
270
Tensile Strength: Yield (Proof), MPa 420 to 450
170

Thermal Properties

Latent Heat of Fusion, J/g 370
210
Specific Heat Capacity, J/kg-K 860
190
Thermal Expansion, µm/m-K 23
6.8

Otherwise Unclassified Properties

Density, g/cm3 3.1
14
Embodied Water, L/kg 1110
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
59
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
90
Stiffness to Weight: Axial, points 13
6.3
Stiffness to Weight: Bending, points 45
13
Strength to Weight: Axial, points 46 to 47
5.4
Strength to Weight: Bending, points 46 to 47
6.8
Thermal Shock Resistance, points 22 to 23
18

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.35
0 to 0.010
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0
0 to 0.010
Niobium (Nb), % 0
35 to 42
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.020
Silicon (Si), % 0 to 0.25
0 to 0.0050
Tantalum (Ta), % 0
57.9 to 65
Titanium (Ti), % 0 to 0.1
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 7.2 to 8.2
0
Residuals, % 0 to 0.15
0