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R05240 Alloy vs. 7075 Aluminum

R05240 alloy belongs to the otherwise unclassified metals classification, while 7075 aluminum belongs to the aluminum alloys. 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 R05240 alloy and the bottom bar is 7075 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
70
Elongation at Break, % 25
1.8 to 12
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 57
26
Tensile Strength: Ultimate (UTS), MPa 270
240 to 590
Tensile Strength: Yield (Proof), MPa 170
120 to 510

Thermal Properties

Latent Heat of Fusion, J/g 210
380
Specific Heat Capacity, J/kg-K 190
870
Thermal Expansion, µm/m-K 6.8
23

Otherwise Unclassified Properties

Density, g/cm3 14
3.0
Embodied Water, L/kg 460
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
7.8 to 44
Resilience: Unit (Modulus of Resilience), kJ/m3 90
110 to 1870
Stiffness to Weight: Axial, points 6.3
13
Stiffness to Weight: Bending, points 13
46
Strength to Weight: Axial, points 5.4
22 to 54
Strength to Weight: Bending, points 6.8
28 to 52
Thermal Shock Resistance, points 18
10 to 25

Alloy Composition

Aluminum (Al), % 0
86.9 to 91.4
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 0
0.18 to 0.28
Copper (Cu), % 0
1.2 to 2.0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0 to 0.5
Magnesium (Mg), % 0
2.1 to 2.9
Manganese (Mn), % 0
0 to 0.3
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 0.2
Tungsten (W), % 0 to 0.050
0
Zinc (Zn), % 0
5.1 to 6.1
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15