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354.0 Aluminum vs. G-CoCr28 Cobalt

354.0 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 (2, 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 354.0 aluminum and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
210
Elongation at Break, % 2.4 to 3.0
6.7
Fatigue Strength, MPa 92 to 120
130
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
83
Tensile Strength: Ultimate (UTS), MPa 360 to 380
560
Tensile Strength: Yield (Proof), MPa 280 to 310
260

Thermal Properties

Latent Heat of Fusion, J/g 530
320
Maximum Temperature: Mechanical, °C 170
1200
Melting Completion (Liquidus), °C 600
1330
Melting Onset (Solidus), °C 550
1270
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
8.5
Thermal Expansion, µm/m-K 21
14

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
100
Density, g/cm3 2.7
8.1
Embodied Carbon, kg CO2/kg material 7.8
6.2
Embodied Energy, MJ/kg 150
84
Embodied Water, L/kg 1070
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.6 to 9.8
31
Resilience: Unit (Modulus of Resilience), kJ/m3 540 to 670
160
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 52
24
Strength to Weight: Axial, points 37 to 39
19
Strength to Weight: Bending, points 42 to 44
19
Thermal Diffusivity, mm2/s 52
2.2
Thermal Shock Resistance, points 17 to 18
14

Alloy Composition


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Aluminum (Al), % 87.3 to 89.4
0
Carbon (C), % 0
0.050 to 0.25
Chromium (Cr), % 0
27 to 30
Cobalt (Co), % 0
48 to 52
Copper (Cu), % 1.6 to 2.0
0
Iron (Fe), % 0 to 0.2
9.7 to 24.5
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.1
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), % 8.6 to 9.4
0.5 to 1.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0