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R31538 Cobalt vs. Z41321 Zinc

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

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
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 8.1
2.8
Embodied Energy, MJ/kg 110
54
Embodied Water, L/kg 530
340

Common Calculations

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

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 0 to 0.75
0 to 0.010
Lead (Pb), % 0
0 to 0.010
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0
Tin (Sn), % 0
0 to 0.0030
Titanium (Ti), % 0
0.080 to 0.18
Zinc (Zn), % 0
98.8 to 99.42