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EN-MC21210 Magnesium vs. Grade 705C Zirconium

EN-MC21210 magnesium belongs to the magnesium alloys classification, while grade 705C 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 EN-MC21210 magnesium and the bottom bar is grade 705C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
200
Elastic (Young's, Tensile) Modulus, GPa 44
98
Elongation at Break, % 14
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
36
Tensile Strength: Ultimate (UTS), MPa 190
540
Tensile Strength: Yield (Proof), MPa 90
390

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Specific Heat Capacity, J/kg-K 1000
270
Thermal Conductivity, W/m-K 120
18
Thermal Expansion, µm/m-K 27
5.7

Otherwise Unclassified Properties

Density, g/cm3 1.6
6.7
Embodied Water, L/kg 980
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
66
Resilience: Unit (Modulus of Resilience), kJ/m3 92
790
Stiffness to Weight: Axial, points 15
8.1
Stiffness to Weight: Bending, points 72
23
Strength to Weight: Axial, points 32
22
Strength to Weight: Bending, points 44
22
Thermal Diffusivity, mm2/s 76
9.9
Thermal Shock Resistance, points 11
69

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0 to 0.1
Copper (Cu), % 0 to 0.010
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 0 to 0.0050
0 to 0.3
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0
Niobium (Nb), % 0
2.0 to 3.0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0
91.9 to 98
Residuals, % 0 to 0.010
0