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R30021 Cobalt vs. Z41121 Zinc

R30021 cobalt belongs to the cobalt alloys classification, while Z41121 zinc belongs to the zinc 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 R30021 cobalt and the bottom bar is Z41121 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
87
Elongation at Break, % 9.0
50
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 86
35
Tensile Strength: Ultimate (UTS), MPa 700
140
Tensile Strength: Yield (Proof), MPa 500
120

Thermal Properties

Latent Heat of Fusion, J/g 330
110
Melting Completion (Liquidus), °C 1350
410
Melting Onset (Solidus), °C 1190
400
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 15
110
Thermal Expansion, µm/m-K 11
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
27
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
37

Otherwise Unclassified Properties

Density, g/cm3 8.4
6.6
Embodied Carbon, kg CO2/kg material 8.0
2.8
Embodied Energy, MJ/kg 110
54
Embodied Water, L/kg 520
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
68
Resilience: Unit (Modulus of Resilience), kJ/m3 570
79
Stiffness to Weight: Axial, points 15
7.4
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 23
6.1
Strength to Weight: Bending, points 21
9.3
Thermal Diffusivity, mm2/s 3.8
44
Thermal Shock Resistance, points 21
4.6

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0.2 to 0.35
0
Chromium (Cr), % 26 to 29
0
Cobalt (Co), % 61.7 to 67.3
0
Copper (Cu), % 0
0.080 to 0.49
Iron (Fe), % 0 to 3.0
0 to 0.010
Lead (Pb), % 0
0 to 0.010
Molybdenum (Mo), % 4.5 to 6.0
0
Nickel (Ni), % 2.0 to 3.0
0
Silicon (Si), % 0 to 1.5
0
Tin (Sn), % 0
0 to 0.0030
Titanium (Ti), % 0
0.050 to 0.18
Zinc (Zn), % 0
99.292 to 99.87