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R05240 Alloy vs. 7049A Aluminum

R05240 alloy belongs to the otherwise unclassified metals classification, while 7049A aluminum belongs to the aluminum alloys. There are 18 material properties with values for both materials. Properties with values for just one material (12, 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 R05240 alloy and the bottom bar is 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
71
Elongation at Break, % 25
5.0 to 5.7
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 57
27
Tensile Strength: Ultimate (UTS), MPa 270
580 to 590
Tensile Strength: Yield (Proof), MPa 170
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 210
370
Specific Heat Capacity, J/kg-K 190
850
Thermal Expansion, µm/m-K 6.8
24

Otherwise Unclassified Properties

Density, g/cm3 14
3.1
Embodied Water, L/kg 460
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 90
1800 to 1990
Stiffness to Weight: Axial, points 6.3
13
Stiffness to Weight: Bending, points 13
44
Strength to Weight: Axial, points 5.4
52 to 53
Strength to Weight: Bending, points 6.8
50 to 51
Thermal Shock Resistance, points 18
25

Alloy Composition

Aluminum (Al), % 0
84.6 to 89.5
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 0
0.050 to 0.25
Copper (Cu), % 0
1.2 to 1.9
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0 to 0.5
Magnesium (Mg), % 0
2.1 to 3.1
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0 to 0.020
0
Nickel (Ni), % 0 to 0.010
0
Niobium (Nb), % 35 to 42
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.020
0
Silicon (Si), % 0 to 0.0050
0 to 0.4
Tantalum (Ta), % 57.9 to 65
0
Titanium (Ti), % 0 to 0.010
0 to 0.25
Tungsten (W), % 0 to 0.050
0
Zinc (Zn), % 0
7.2 to 8.4
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15