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Grade 363 Molybdenum vs. ZK60A Magnesium

Grade 363 molybdenum belongs to the otherwise unclassified metals classification, while ZK60A magnesium belongs to the magnesium alloys. 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 grade 363 molybdenum and the bottom bar is ZK60A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
46
Elongation at Break, % 6.2 to 11
4.5 to 9.9
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 120
18
Tensile Strength: Ultimate (UTS), MPa 580 to 720
320 to 330
Tensile Strength: Yield (Proof), MPa 350 to 620
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 370
330
Specific Heat Capacity, J/kg-K 250
960
Thermal Expansion, µm/m-K 7.0
26

Otherwise Unclassified Properties

Density, g/cm3 10
1.9
Embodied Carbon, kg CO2/kg material 28
23
Embodied Energy, MJ/kg 330
160
Embodied Water, L/kg 360
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 43 to 57
14 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 630
570 to 690
Stiffness to Weight: Axial, points 17
13
Stiffness to Weight: Bending, points 22
63
Strength to Weight: Axial, points 16 to 20
47 to 49
Strength to Weight: Bending, points 15 to 17
55 to 56
Thermal Shock Resistance, points 19 to 24
19 to 20

Alloy Composition

Carbon (C), % 0.010 to 0.030
0
Iron (Fe), % 0 to 0.010
0
Magnesium (Mg), % 0
92.5 to 94.8
Molybdenum (Mo), % 99.3 to 99.5
0
Nickel (Ni), % 0 to 0.0020
0
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0030
0
Silicon (Si), % 0 to 0.010
0
Titanium (Ti), % 0.4 to 0.55
0
Zinc (Zn), % 0
4.8 to 6.2
Zirconium (Zr), % 0.060 to 0.12
0.45 to 1.0
Residuals, % 0
0 to 0.3