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AS41B Magnesium vs. Grade 704C Zirconium

AS41B magnesium belongs to the magnesium alloys classification, while grade 704C zirconium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 grade 704C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
97
Elongation at Break, % 6.0
11
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
36
Tensile Strength: Ultimate (UTS), MPa 210
470
Tensile Strength: Yield (Proof), MPa 140
310

Thermal Properties

Latent Heat of Fusion, J/g 370
240
Specific Heat Capacity, J/kg-K 1000
270
Thermal Conductivity, W/m-K 68
21
Thermal Expansion, µm/m-K 26
5.9

Otherwise Unclassified Properties

Density, g/cm3 1.7
6.7
Embodied Water, L/kg 980
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
48
Resilience: Unit (Modulus of Resilience), kJ/m3 220
490
Stiffness to Weight: Axial, points 15
8.1
Stiffness to Weight: Bending, points 72
23
Strength to Weight: Axial, points 35
20
Strength to Weight: Bending, points 47
20
Thermal Diffusivity, mm2/s 41
12
Thermal Shock Resistance, points 13
58

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.1
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 0.3
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 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0.5 to 1.5
0
Tin (Sn), % 0
1.0 to 2.0
Zinc (Zn), % 0 to 0.12
0
Zirconium (Zr), % 0
92.9 to 99