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G-CoCr28 Cobalt vs. 328.0 Aluminum

G-CoCr28 cobalt belongs to the cobalt alloys classification, while 328.0 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 328.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
72
Elongation at Break, % 6.7
1.6 to 2.1
Fatigue Strength, MPa 130
55 to 80
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 83
27
Tensile Strength: Ultimate (UTS), MPa 560
200 to 270
Tensile Strength: Yield (Proof), MPa 260
120 to 170

Thermal Properties

Latent Heat of Fusion, J/g 320
510
Maximum Temperature: Mechanical, °C 1200
180
Melting Completion (Liquidus), °C 1330
620
Melting Onset (Solidus), °C 1270
560
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 8.5
120
Thermal Expansion, µm/m-K 14
22

Otherwise Unclassified Properties

Base Metal Price, % relative 100
10
Density, g/cm3 8.1
2.7
Embodied Carbon, kg CO2/kg material 6.2
7.8
Embodied Energy, MJ/kg 84
140
Embodied Water, L/kg 440
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
2.8 to 5.0
Resilience: Unit (Modulus of Resilience), kJ/m3 160
92 to 200
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 19
21 to 28
Strength to Weight: Bending, points 19
28 to 34
Thermal Diffusivity, mm2/s 2.2
50
Thermal Shock Resistance, points 14
9.2 to 12

Alloy Composition

Aluminum (Al), % 0
84.5 to 91.1
Carbon (C), % 0.050 to 0.25
0
Chromium (Cr), % 27 to 30
0 to 0.35
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
1.0 to 2.0
Iron (Fe), % 9.7 to 24.5
0 to 1.0
Magnesium (Mg), % 0
0.2 to 0.6
Manganese (Mn), % 0 to 1.5
0.2 to 0.6
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
0 to 0.25
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.5 to 1.5
7.5 to 8.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.5