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Zamak 5 vs. R30008 Cobalt

Zamak 5 belongs to the zinc alloys classification, while R30008 cobalt belongs to the cobalt alloys. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is Zamak 5 and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
210
Elongation at Break, % 6.3
1.1 to 73
Fatigue Strength, MPa 56
320 to 530
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 33
83
Tensile Strength: Ultimate (UTS), MPa 330
950 to 1700
Tensile Strength: Yield (Proof), MPa 240
500 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 120
320
Melting Completion (Liquidus), °C 390
1400
Melting Onset (Solidus), °C 380
1330
Specific Heat Capacity, J/kg-K 410
450
Thermal Expansion, µm/m-K 27
13

Otherwise Unclassified Properties

Base Metal Price, % relative 12
95
Density, g/cm3 6.4
8.4
Embodied Carbon, kg CO2/kg material 3.0
8.1
Embodied Energy, MJ/kg 57
110
Embodied Water, L/kg 380
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 330
590 to 2720
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 14
31 to 56
Strength to Weight: Bending, points 16
25 to 37
Thermal Shock Resistance, points 9.9
25 to 44

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Boron (B), % 0
0 to 0.0010
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
18.5 to 21.5
Cobalt (Co), % 0
39 to 42
Copper (Cu), % 0.7 to 1.3
0
Iron (Fe), % 0 to 0.1
7.6 to 20
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.025 to 0.080
0
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
6.5 to 7.5
Nickel (Ni), % 0 to 0.020
15 to 18
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.030
0 to 1.2
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.0030
0
Zinc (Zn), % 94.3 to 95.7
0