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R30008 Cobalt vs. Zamak 3

R30008 cobalt belongs to the cobalt alloys classification, while Zamak 3 belongs to the zinc alloys. There are 23 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is R30008 cobalt and the bottom bar is Zamak 3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
86
Elongation at Break, % 1.1 to 73
11
Fatigue Strength, MPa 320 to 530
48
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 83
33
Tensile Strength: Ultimate (UTS), MPa 950 to 1700
280
Tensile Strength: Yield (Proof), MPa 500 to 1080
210

Thermal Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 95
11
Density, g/cm3 8.4
6.4
Embodied Carbon, kg CO2/kg material 8.1
3.0
Embodied Energy, MJ/kg 110
57
Embodied Water, L/kg 400
380

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 2720
260
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 31 to 56
12
Strength to Weight: Bending, points 25 to 37
15
Thermal Shock Resistance, points 25 to 44
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Boron (B), % 0 to 0.0010
0
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 18.5 to 21.5
0
Cobalt (Co), % 39 to 42
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 7.6 to 20
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Manganese (Mn), % 1.0 to 2.0
0
Molybdenum (Mo), % 6.5 to 7.5
0
Nickel (Ni), % 15 to 18
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
95.3 to 96.5