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2618A Aluminum vs. R05240 Alloy

2618A 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 (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 2618A aluminum and the bottom bar is R05240 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
150
Elongation at Break, % 4.5
25
Poisson's Ratio 0.33
0.36
Shear Modulus, GPa 27
57
Tensile Strength: Ultimate (UTS), MPa 440
270
Tensile Strength: Yield (Proof), MPa 410
170

Thermal Properties

Latent Heat of Fusion, J/g 390
210
Specific Heat Capacity, J/kg-K 880
190
Thermal Expansion, µm/m-K 23
6.8

Otherwise Unclassified Properties

Density, g/cm3 3.0
14
Embodied Water, L/kg 1150
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
59
Resilience: Unit (Modulus of Resilience), kJ/m3 1180
90
Stiffness to Weight: Axial, points 13
6.3
Stiffness to Weight: Bending, points 47
13
Strength to Weight: Axial, points 41
5.4
Strength to Weight: Bending, points 44
6.8
Thermal Shock Resistance, points 19
18

Alloy Composition

Aluminum (Al), % 91.5 to 95.2
0
Carbon (C), % 0
0 to 0.010
Copper (Cu), % 1.8 to 2.7
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0.9 to 1.4
0 to 0.010
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.25
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0.8 to 1.4
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), % 0.15 to 0.25
0 to 0.0050
Tantalum (Ta), % 0
57.9 to 65
Titanium (Ti), % 0 to 0.2
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.15
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0