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R31233 Cobalt vs. Zamak 5

R31233 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 (8, in this case) are not shown.

For each property being compared, the top bar is R31233 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, % 17
6.3
Fatigue Strength, MPa 220
56
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 85
33
Tensile Strength: Ultimate (UTS), MPa 1020
330
Tensile Strength: Yield (Proof), MPa 420
240

Thermal Properties

Latent Heat of Fusion, J/g 320
120
Melting Completion (Liquidus), °C 1350
390
Melting Onset (Solidus), °C 1330
380
Specific Heat Capacity, J/kg-K 440
410
Thermal Conductivity, W/m-K 12
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 8.6
6.4
Embodied Carbon, kg CO2/kg material 8.4
3.0
Embodied Energy, MJ/kg 110
57
Embodied Water, L/kg 480
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
19
Resilience: Unit (Modulus of Resilience), kJ/m3 410
330
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 33
14
Strength to Weight: Bending, points 26
16
Thermal Diffusivity, mm2/s 3.2
42
Thermal Shock Resistance, points 25
9.9

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Boron (B), % 0 to 0.015
0
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0.020 to 0.1
0
Chromium (Cr), % 23.5 to 27.5
0
Cobalt (Co), % 44.7 to 63.3
0
Copper (Cu), % 0
0.7 to 1.3
Iron (Fe), % 1.0 to 5.0
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.025 to 0.080
Manganese (Mn), % 0.1 to 1.5
0
Molybdenum (Mo), % 4.0 to 6.0
0
Nickel (Ni), % 7.0 to 11
0 to 0.020
Nitrogen (N), % 0.030 to 0.12
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.050 to 1.0
0 to 0.030
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0
0 to 0.0030
Tungsten (W), % 1.0 to 3.0
0
Zinc (Zn), % 0
94.3 to 95.7