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Z41321 Zinc vs. R31538 Cobalt

Z41321 zinc belongs to the zinc alloys classification, while R31538 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 Z41321 zinc and the bottom bar is R31538 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
220
Elongation at Break, % 60
13 to 23
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 35
86
Tensile Strength: Ultimate (UTS), MPa 190
1020 to 1360
Tensile Strength: Yield (Proof), MPa 150
580 to 930

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
8.1
Embodied Energy, MJ/kg 54
110
Embodied Water, L/kg 340
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
140 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 130
750 to 1920
Stiffness to Weight: Axial, points 7.4
15
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 7.9
34 to 45
Strength to Weight: Bending, points 11
27 to 32
Thermal Diffusivity, mm2/s 44
3.5
Thermal Shock Resistance, points 5.9
25 to 33

Alloy Composition

Aluminum (Al), % 0 to 0.010
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0.15 to 0.35
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.7 to 68.9
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 0 to 0.010
0 to 0.75
Lead (Pb), % 0 to 0.010
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
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0.080 to 0.18
0
Zinc (Zn), % 98.8 to 99.42
0