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ZC63A Magnesium vs. R30006 Cobalt

ZC63A magnesium belongs to the magnesium alloys classification, while R30006 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, 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 ZC63A magnesium and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 48
220
Elongation at Break, % 3.3
1.0
Fatigue Strength, MPa 94
260
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 19
85
Tensile Strength: Ultimate (UTS), MPa 220
900
Tensile Strength: Yield (Proof), MPa 130
540

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Melting Completion (Liquidus), °C 550
1400
Melting Onset (Solidus), °C 470
1290
Specific Heat Capacity, J/kg-K 950
450
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 140
1.7

Otherwise Unclassified Properties

Density, g/cm3 2.1
8.6
Embodied Carbon, kg CO2/kg material 22
7.8
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 920
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
7.8
Resilience: Unit (Modulus of Resilience), kJ/m3 190
670
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
23
Strength to Weight: Axial, points 29
29
Strength to Weight: Bending, points 38
24
Thermal Diffusivity, mm2/s 58
3.9
Thermal Shock Resistance, points 12
26

Alloy Composition


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Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
48.6 to 68.1
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0
0 to 3.0
Magnesium (Mg), % 89.2 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.010
0 to 3.0
Silicon (Si), % 0 to 0.2
0 to 2.0
Tungsten (W), % 0
4.0 to 6.0
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.3
0