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Zamak 5 vs. R30035 Cobalt

Zamak 5 belongs to the zinc alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 28 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 Zamak 5 and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
220 to 230
Elongation at Break, % 6.3
9.0 to 46
Fatigue Strength, MPa 56
170 to 740
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 33
84 to 89
Tensile Strength: Ultimate (UTS), MPa 330
900 to 1900
Tensile Strength: Yield (Proof), MPa 240
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 120
320
Melting Completion (Liquidus), °C 390
1440
Melting Onset (Solidus), °C 380
1320
Specific Heat Capacity, J/kg-K 410
440
Thermal Conductivity, W/m-K 110
11
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 37
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
100
Density, g/cm3 6.4
8.7
Embodied Carbon, kg CO2/kg material 3.0
10
Embodied Energy, MJ/kg 57
140
Embodied Water, L/kg 380
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 330
210 to 5920
Stiffness to Weight: Axial, points 7.5
14 to 15
Stiffness to Weight: Bending, points 23
23 to 24
Strength to Weight: Axial, points 14
29 to 61
Strength to Weight: Bending, points 16
24 to 39
Thermal Diffusivity, mm2/s 42
3.0
Thermal Shock Resistance, points 9.9
23 to 46

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Boron (B), % 0
0 to 0.015
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
29.1 to 39
Copper (Cu), % 0.7 to 1.3
0
Iron (Fe), % 0 to 0.1
0 to 1.0
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.025 to 0.080
0
Manganese (Mn), % 0
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0 to 0.020
33 to 37
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.030
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0
0 to 1.0
Zinc (Zn), % 94.3 to 95.7
0