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7178 Aluminum vs. R05252 Alloy

7178 aluminum belongs to the aluminum alloys classification, while R05252 alloy belongs to the otherwise unclassified metals. 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 7178 aluminum and the bottom bar is R05252 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 4.5 to 12
23
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 240 to 640
310
Tensile Strength: Yield (Proof), MPa 120 to 560
220

Thermal Properties

Latent Heat of Fusion, J/g 370
140
Specific Heat Capacity, J/kg-K 860
140
Thermal Expansion, µm/m-K 23
6.7

Otherwise Unclassified Properties

Density, g/cm3 3.1
17
Embodied Water, L/kg 1110
600

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 52
63
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
120
Stiffness to Weight: Axial, points 13
6.5
Stiffness to Weight: Bending, points 45
12
Strength to Weight: Axial, points 21 to 58
5.2
Strength to Weight: Bending, points 28 to 54
6.1
Thermal Shock Resistance, points 10 to 28
17

Alloy Composition

Aluminum (Al), % 85.4 to 89.5
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.6 to 2.4
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.5
0 to 0.010
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Silicon (Si), % 0 to 0.4
0 to 0.0050
Tantalum (Ta), % 0
88.8 to 91
Titanium (Ti), % 0 to 0.2
0 to 0.010
Tungsten (W), % 0
9.0 to 11
Zinc (Zn), % 6.3 to 7.3
0
Residuals, % 0 to 0.15
0