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Commercially Pure Zinc vs. R30012 Cobalt

Commercially pure zinc belongs to the zinc alloys classification, while R30012 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is commercially pure zinc and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
220
Elongation at Break, % 38
1.0
Poisson's Ratio 0.25
0.28
Shear Modulus, GPa 35
86
Tensile Strength: Ultimate (UTS), MPa 97
830
Tensile Strength: Yield (Proof), MPa 79
650

Thermal Properties

Latent Heat of Fusion, J/g 110
320
Melting Completion (Liquidus), °C 410
1470
Melting Onset (Solidus), °C 400
1280
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 110
15
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 37
1.8

Otherwise Unclassified Properties

Density, g/cm3 6.6
8.8
Embodied Carbon, kg CO2/kg material 2.8
8.3
Embodied Energy, MJ/kg 53
120
Embodied Water, L/kg 340
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 34
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 36
960
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 4.1
26
Strength to Weight: Bending, points 7.1
22
Thermal Diffusivity, mm2/s 44
3.8
Thermal Shock Resistance, points 3.0
23

Alloy Composition

Aluminum (Al), % 0 to 0.010
0
Cadmium (Cd), % 0 to 0.010
0
Carbon (C), % 0
1.4 to 2.0
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Copper (Cu), % 0 to 0.080
0
Iron (Fe), % 0 to 0.020
0 to 3.0
Lead (Pb), % 0 to 0.030
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 0
0 to 2.0
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0 to 0.020
0
Tungsten (W), % 0
7.5 to 9.5
Zinc (Zn), % 99.827 to 100
0