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Grade 702C Zirconium vs. 7005 Aluminum

Grade 702C zirconium belongs to the otherwise unclassified metals classification, while 7005 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 702C zirconium and the bottom bar is 7005 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 97
70
Elongation at Break, % 13
10 to 20
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 36
26
Tensile Strength: Ultimate (UTS), MPa 430
200 to 400
Tensile Strength: Yield (Proof), MPa 310
95 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
380
Specific Heat Capacity, J/kg-K 270
880
Thermal Conductivity, W/m-K 22
140 to 170
Thermal Expansion, µm/m-K 5.7
23

Otherwise Unclassified Properties

Density, g/cm3 6.7
2.9
Embodied Water, L/kg 450
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
32 to 57
Resilience: Unit (Modulus of Resilience), kJ/m3 510
65 to 850
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
47
Strength to Weight: Axial, points 18
19 to 38
Strength to Weight: Bending, points 19
26 to 41
Thermal Diffusivity, mm2/s 12
54 to 65
Thermal Shock Resistance, points 55
8.7 to 18

Alloy Composition

Aluminum (Al), % 0
91 to 94.7
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 0
0.060 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
1.0 to 1.8
Manganese (Mn), % 0
0.2 to 0.7
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.35
Titanium (Ti), % 0
0.010 to 0.060
Zinc (Zn), % 0
4.0 to 5.0
Zirconium (Zr), % 94.8 to 100
0.080 to 0.2
Residuals, % 0
0 to 0.15