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G-CoCr28 Cobalt vs. 5456 Aluminum

G-CoCr28 cobalt belongs to the cobalt alloys classification, while 5456 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 G-CoCr28 cobalt and the bottom bar is 5456 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
68
Elongation at Break, % 6.7
11 to 18
Fatigue Strength, MPa 130
130 to 210
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 83
26
Tensile Strength: Ultimate (UTS), MPa 560
320 to 340
Tensile Strength: Yield (Proof), MPa 260
150 to 250

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Maximum Temperature: Mechanical, °C 1200
190
Melting Completion (Liquidus), °C 1330
640
Melting Onset (Solidus), °C 1270
570
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 8.5
120
Thermal Expansion, µm/m-K 14
24

Otherwise Unclassified Properties

Base Metal Price, % relative 100
9.5
Density, g/cm3 8.1
2.7
Embodied Carbon, kg CO2/kg material 6.2
9.0
Embodied Energy, MJ/kg 84
150
Embodied Water, L/kg 440
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
33 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 160
170 to 470
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 19
33 to 35
Strength to Weight: Bending, points 19
38 to 40
Thermal Diffusivity, mm2/s 2.2
48
Thermal Shock Resistance, points 14
14 to 15

Alloy Composition

Aluminum (Al), % 0
92 to 94.8
Carbon (C), % 0.050 to 0.25
0
Chromium (Cr), % 27 to 30
0.050 to 0.2
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 9.7 to 24.5
0 to 0.4
Magnesium (Mg), % 0
4.7 to 5.5
Manganese (Mn), % 0 to 1.5
0.5 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
0
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.5 to 1.5
0 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15