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R30003 Cobalt vs. Zamak 5

R30003 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 R30003 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, % 10 to 73
6.3
Fatigue Strength, MPa 320 to 560
56
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 83
33
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
330
Tensile Strength: Yield (Proof), MPa 510 to 1090
240

Thermal Properties

Latent Heat of Fusion, J/g 310
120
Melting Completion (Liquidus), °C 1400
390
Melting Onset (Solidus), °C 1440
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

Base Metal Price, % relative 95
12
Density, g/cm3 8.4
6.4
Embodied Carbon, kg CO2/kg material 8.0
3.0
Embodied Energy, MJ/kg 110
57
Embodied Water, L/kg 400
380

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 2790
330
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 32 to 57
14
Strength to Weight: Bending, points 26 to 38
16
Thermal Diffusivity, mm2/s 3.3
42
Thermal Shock Resistance, points 26 to 45
9.9

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Boron (B), % 0 to 0.1
0
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 39 to 41
0
Copper (Cu), % 0
0.7 to 1.3
Iron (Fe), % 10 to 20.5
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.025 to 0.080
Manganese (Mn), % 1.5 to 2.5
0
Molybdenum (Mo), % 6.0 to 8.0
0
Nickel (Ni), % 14 to 16
0 to 0.020
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 1.2
0 to 0.030
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
94.3 to 95.7