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Z20301 Zinc vs. R31539 Cobalt

Z20301 zinc belongs to the zinc alloys classification, while R31539 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 Z20301 zinc and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
220
Elongation at Break, % 53
13 to 22
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 35
86
Tensile Strength: Ultimate (UTS), MPa 160
1000 to 1340
Tensile Strength: Yield (Proof), MPa 130
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 110
320
Melting Completion (Liquidus), °C 410
1360
Melting Onset (Solidus), °C 400
1290
Specific Heat Capacity, J/kg-K 390
450
Thermal Conductivity, W/m-K 110
13
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 37
2.1

Otherwise Unclassified Properties

Density, g/cm3 6.6
8.4
Embodied Carbon, kg CO2/kg material 2.8
8.2
Embodied Energy, MJ/kg 53
110
Embodied Water, L/kg 340
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
140 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 96
780 to 2000
Stiffness to Weight: Axial, points 7.4
15
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 6.7
33 to 44
Strength to Weight: Bending, points 9.9
27 to 32
Thermal Diffusivity, mm2/s 44
3.5
Thermal Shock Resistance, points 5.0
24 to 32

Alloy Composition

Aluminum (Al), % 0 to 0.0020
0.3 to 1.0
Cadmium (Cd), % 0 to 0.010
0
Carbon (C), % 0
0 to 0.14
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
57.7 to 68.7
Copper (Cu), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.010
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Lead (Pb), % 0 to 0.1
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Silicon (Si), % 0
0 to 1.0
Titanium (Ti), % 0 to 0.020
0
Zinc (Zn), % 99.853 to 100
0