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2025 Aluminum vs. Grade 704C Zirconium

2025 aluminum belongs to the aluminum alloys classification, while grade 704C zirconium belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 2025 aluminum and the bottom bar is grade 704C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
210
Elastic (Young's, Tensile) Modulus, GPa 72
97
Elongation at Break, % 15
11
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
36
Tensile Strength: Ultimate (UTS), MPa 400
470
Tensile Strength: Yield (Proof), MPa 260
310

Thermal Properties

Latent Heat of Fusion, J/g 400
240
Specific Heat Capacity, J/kg-K 870
270
Thermal Conductivity, W/m-K 150
21
Thermal Expansion, µm/m-K 23
5.9

Otherwise Unclassified Properties

Density, g/cm3 3.0
6.7
Embodied Water, L/kg 1130
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
48
Resilience: Unit (Modulus of Resilience), kJ/m3 450
490
Stiffness to Weight: Axial, points 13
8.1
Stiffness to Weight: Bending, points 46
23
Strength to Weight: Axial, points 37
20
Strength to Weight: Bending, points 40
20
Thermal Diffusivity, mm2/s 58
12
Thermal Shock Resistance, points 18
58

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.9 to 5.0
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 0 to 1.0
0 to 0.3
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0.4 to 1.2
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0.5 to 1.2
0
Tin (Sn), % 0
1.0 to 2.0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0
92.9 to 99
Residuals, % 0 to 0.15
0