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Grade 702C Zirconium vs. ZE41A Magnesium

Grade 702C zirconium belongs to the otherwise unclassified metals classification, while ZE41A magnesium belongs to the magnesium alloys. There are 21 material properties with values for both materials. Properties with values for just one material (14, 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 ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
63
Elastic (Young's, Tensile) Modulus, GPa 97
45
Elongation at Break, % 13
3.3
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
18
Tensile Strength: Ultimate (UTS), MPa 430
210
Tensile Strength: Yield (Proof), MPa 310
140

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Specific Heat Capacity, J/kg-K 270
970
Thermal Conductivity, W/m-K 22
110
Thermal Expansion, µm/m-K 5.7
27

Otherwise Unclassified Properties

Density, g/cm3 6.7
1.9
Embodied Water, L/kg 450
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 510
220
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
63
Strength to Weight: Axial, points 18
31
Strength to Weight: Bending, points 19
41
Thermal Diffusivity, mm2/s 12
59
Thermal Shock Resistance, points 55
12

Alloy Composition

Carbon (C), % 0 to 0.1
0
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
Magnesium (Mg), % 0
91.7 to 95.4
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0
0 to 0.010
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.010
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 0
3.5 to 5.0
Zirconium (Zr), % 94.8 to 100
0.4 to 1.0
Residuals, % 0
0 to 0.3