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G-CoCr28 Cobalt vs. 242.0 Aluminum

G-CoCr28 cobalt belongs to the cobalt alloys classification, while 242.0 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
73
Elongation at Break, % 6.7
0.5 to 1.5
Fatigue Strength, MPa 130
55 to 110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 83
27
Tensile Strength: Ultimate (UTS), MPa 560
180 to 290
Tensile Strength: Yield (Proof), MPa 260
120 to 220

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Maximum Temperature: Mechanical, °C 1200
210
Melting Completion (Liquidus), °C 1330
640
Melting Onset (Solidus), °C 1270
530
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 8.5
130 to 170
Thermal Expansion, µm/m-K 14
22

Otherwise Unclassified Properties

Base Metal Price, % relative 100
12
Density, g/cm3 8.1
3.1
Embodied Carbon, kg CO2/kg material 6.2
8.3
Embodied Energy, MJ/kg 84
150
Embodied Water, L/kg 440
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
1.3 to 3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 160
110 to 340
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 19
16 to 26
Strength to Weight: Bending, points 19
23 to 32
Thermal Diffusivity, mm2/s 2.2
50 to 62
Thermal Shock Resistance, points 14
8.0 to 13

Alloy Composition

Aluminum (Al), % 0
88.4 to 93.6
Carbon (C), % 0.050 to 0.25
0
Chromium (Cr), % 27 to 30
0 to 0.25
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
3.5 to 4.5
Iron (Fe), % 9.7 to 24.5
0 to 1.0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0 to 1.5
0 to 0.35
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
1.7 to 2.3
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.5 to 1.5
0 to 0.7
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15