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Zamak 5 vs. R30016 Cobalt

Zamak 5 belongs to the zinc alloys classification, while R30016 cobalt belongs to the cobalt alloys. There are 28 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is Zamak 5 and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 600
1600
Elastic (Young's, Tensile) Modulus, GPa 87
220
Elongation at Break, % 6.3
8.4
Fatigue Strength, MPa 56
290
Poisson's Ratio 0.25
0.28
Shear Modulus, GPa 33
85
Tensile Strength: Ultimate (UTS), MPa 330
1010
Tensile Strength: Yield (Proof), MPa 240
580

Thermal Properties

Latent Heat of Fusion, J/g 120
320
Melting Completion (Liquidus), °C 390
1360
Melting Onset (Solidus), °C 380
1270
Specific Heat Capacity, J/kg-K 410
450
Thermal Conductivity, W/m-K 110
15
Thermal Expansion, µm/m-K 27
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 37
2.0

Otherwise Unclassified Properties

Density, g/cm3 6.4
8.5
Embodied Carbon, kg CO2/kg material 3.0
7.7
Embodied Energy, MJ/kg 57
110
Embodied Water, L/kg 380
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
72
Resilience: Unit (Modulus of Resilience), kJ/m3 330
770
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 14
33
Strength to Weight: Bending, points 16
26
Thermal Diffusivity, mm2/s 42
3.9
Thermal Shock Resistance, points 9.9
24

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 0.7 to 1.3
0
Iron (Fe), % 0 to 0.1
0 to 3.0
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.025 to 0.080
0
Manganese (Mn), % 0
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0 to 0.020
0 to 3.0
Silicon (Si), % 0 to 0.030
0.2 to 2.0
Tin (Sn), % 0 to 0.0030
0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 94.3 to 95.7
0