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Grade 705C Zirconium vs. 5456 Aluminum

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while 5456 aluminum belongs to the aluminum alloys. There are 20 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 grade 705C zirconium and the bottom bar is 5456 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
68
Elongation at Break, % 13
11 to 18
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 36
26
Tensile Strength: Ultimate (UTS), MPa 540
320 to 340
Tensile Strength: Yield (Proof), MPa 390
150 to 250

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Specific Heat Capacity, J/kg-K 270
900
Thermal Conductivity, W/m-K 18
120
Thermal Expansion, µm/m-K 5.7
24

Otherwise Unclassified Properties

Density, g/cm3 6.7
2.7
Embodied Water, L/kg 450
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
33 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 790
170 to 470
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
50
Strength to Weight: Axial, points 22
33 to 35
Strength to Weight: Bending, points 22
38 to 40
Thermal Diffusivity, mm2/s 9.9
48
Thermal Shock Resistance, points 69
14 to 15

Alloy Composition

Aluminum (Al), % 0
92 to 94.8
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 0
0.050 to 0.2
Copper (Cu), % 0
0 to 0.1
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
0 to 0.4
Magnesium (Mg), % 0
4.7 to 5.5
Manganese (Mn), % 0
0.5 to 1.0
Niobium (Nb), % 2.0 to 3.0
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.25
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 91.9 to 98
0
Residuals, % 0
0 to 0.15