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AS41B Magnesium vs. Low-oxygen Zirconium

AS41B magnesium belongs to the magnesium alloys classification, while low-oxygen zirconium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (10, 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 AS41B magnesium and the bottom bar is low-oxygen zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
98
Elongation at Break, % 6.0
23
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
37
Tensile Strength: Ultimate (UTS), MPa 210
330
Tensile Strength: Yield (Proof), MPa 140
270

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Specific Heat Capacity, J/kg-K 1000
270
Thermal Conductivity, W/m-K 68
22
Thermal Expansion, µm/m-K 26
5.7

Otherwise Unclassified Properties

Density, g/cm3 1.7
6.7
Embodied Water, L/kg 980
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
70
Resilience: Unit (Modulus of Resilience), kJ/m3 220
370
Stiffness to Weight: Axial, points 15
8.1
Stiffness to Weight: Bending, points 72
23
Strength to Weight: Axial, points 35
14
Strength to Weight: Bending, points 47
16
Thermal Diffusivity, mm2/s 41
12
Thermal Shock Resistance, points 13
42

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
0 to 0.2
Copper (Cu), % 0 to 0.020
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 0 to 0.0035
0 to 0.2
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0
Nitrogen (N), % 0
0 to 0.025
Oxygen (O), % 0
0 to 0.1
Silicon (Si), % 0.5 to 1.5
0
Zinc (Zn), % 0 to 0.12
0
Zirconium (Zr), % 0
94.7 to 100