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G-CoCr28 Cobalt vs. 240.0 Aluminum

G-CoCr28 cobalt belongs to the cobalt alloys classification, while 240.0 aluminum belongs to the aluminum 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 G-CoCr28 cobalt and the bottom bar is 240.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
72
Elongation at Break, % 6.7
1.0
Fatigue Strength, MPa 130
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 83
27
Tensile Strength: Ultimate (UTS), MPa 560
240
Tensile Strength: Yield (Proof), MPa 260
200

Thermal Properties

Latent Heat of Fusion, J/g 320
380
Maximum Temperature: Mechanical, °C 1200
180
Melting Completion (Liquidus), °C 1330
600
Melting Onset (Solidus), °C 1270
520
Specific Heat Capacity, J/kg-K 470
860
Thermal Conductivity, W/m-K 8.5
96
Thermal Expansion, µm/m-K 14
22

Otherwise Unclassified Properties

Base Metal Price, % relative 100
12
Density, g/cm3 8.1
3.2
Embodied Carbon, kg CO2/kg material 6.2
8.7
Embodied Energy, MJ/kg 84
150
Embodied Water, L/kg 440
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 160
280
Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 24
43
Strength to Weight: Axial, points 19
20
Strength to Weight: Bending, points 19
26
Thermal Diffusivity, mm2/s 2.2
35
Thermal Shock Resistance, points 14
11

Alloy Composition

Aluminum (Al), % 0
81.7 to 86.9
Carbon (C), % 0.050 to 0.25
0
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
7.0 to 9.0
Iron (Fe), % 9.7 to 24.5
0 to 0.5
Magnesium (Mg), % 0
5.5 to 6.5
Manganese (Mn), % 0 to 1.5
0.3 to 0.7
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
0.3 to 0.7
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.5 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15