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B443.0 Aluminum vs. G-CoCr28 Cobalt

B443.0 aluminum belongs to the aluminum alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is B443.0 aluminum and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
210
Elongation at Break, % 4.9
6.7
Fatigue Strength, MPa 55
130
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
83
Tensile Strength: Ultimate (UTS), MPa 150
560
Tensile Strength: Yield (Proof), MPa 50
260

Thermal Properties

Latent Heat of Fusion, J/g 470
320
Maximum Temperature: Mechanical, °C 170
1200
Melting Completion (Liquidus), °C 620
1330
Melting Onset (Solidus), °C 600
1270
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 150
8.5
Thermal Expansion, µm/m-K 22
14

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
100
Density, g/cm3 2.7
8.1
Embodied Carbon, kg CO2/kg material 8.0
6.2
Embodied Energy, MJ/kg 150
84
Embodied Water, L/kg 1130
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
31
Resilience: Unit (Modulus of Resilience), kJ/m3 18
160
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 52
24
Strength to Weight: Axial, points 15
19
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 61
2.2
Thermal Shock Resistance, points 6.8
14

Alloy Composition


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Aluminum (Al), % 91.9 to 95.5
0
Carbon (C), % 0
0.050 to 0.25
Chromium (Cr), % 0
27 to 30
Cobalt (Co), % 0
48 to 52
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 0.8
9.7 to 24.5
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.35
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 4.0
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 4.5 to 6.0
0.5 to 1.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0