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R31539 Cobalt vs. Zamak 5

R31539 cobalt belongs to the cobalt alloys classification, while Zamak 5 belongs to the zinc alloys. There are 27 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R31539 cobalt and the bottom bar is Zamak 5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
87
Elongation at Break, % 13 to 22
6.3
Fatigue Strength, MPa 310 to 480
56
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 86
33
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
330
Tensile Strength: Yield (Proof), MPa 590 to 940
240

Thermal Properties

Latent Heat of Fusion, J/g 320
120
Melting Completion (Liquidus), °C 1360
390
Melting Onset (Solidus), °C 1290
380
Specific Heat Capacity, J/kg-K 450
410
Thermal Conductivity, W/m-K 13
110
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
26
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
37

Otherwise Unclassified Properties

Density, g/cm3 8.4
6.4
Embodied Carbon, kg CO2/kg material 8.2
3.0
Embodied Energy, MJ/kg 110
57
Embodied Water, L/kg 530
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
19
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
330
Stiffness to Weight: Axial, points 15
7.5
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 33 to 44
14
Strength to Weight: Bending, points 27 to 32
16
Thermal Diffusivity, mm2/s 3.5
42
Thermal Shock Resistance, points 24 to 32
9.9

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 57.7 to 68.7
0
Copper (Cu), % 0
0.7 to 1.3
Iron (Fe), % 0 to 0.75
0 to 0.1
Lanthanum (La), % 0.030 to 0.2
0
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.025 to 0.080
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0 to 0.020
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0 to 0.030
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
94.3 to 95.7