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R30605 Cobalt vs. Zamak 5

R30605 cobalt belongs to the cobalt alloys classification, while Zamak 5 belongs to the zinc alloys. There are 25 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 R30605 cobalt and the bottom bar is Zamak 5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
87
Elongation at Break, % 34
6.3
Fatigue Strength, MPa 260 to 590
56
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 81
33
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
330
Tensile Strength: Yield (Proof), MPa 470 to 1600
240

Thermal Properties

Latent Heat of Fusion, J/g 290
120
Melting Completion (Liquidus), °C 1410
390
Melting Onset (Solidus), °C 1330
380
Specific Heat Capacity, J/kg-K 410
410
Thermal Conductivity, W/m-K 9.6
110
Thermal Expansion, µm/m-K 12
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
26
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
37

Otherwise Unclassified Properties

Density, g/cm3 9.6
6.4
Embodied Carbon, kg CO2/kg material 9.8
3.0
Embodied Energy, MJ/kg 140
57
Embodied Water, L/kg 450
380

Common Calculations

Stiffness to Weight: Axial, points 12
7.5
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 33 to 55
14
Strength to Weight: Bending, points 25 to 36
16
Thermal Diffusivity, mm2/s 2.5
42
Thermal Shock Resistance, points 31 to 52
9.9

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
0.7 to 1.3
Iron (Fe), % 0 to 3.0
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.025 to 0.080
Manganese (Mn), % 1.0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0 to 0.020
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.4
0 to 0.030
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0030
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
94.3 to 95.7