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R31537 Cobalt vs. 1070A Aluminum

R31537 cobalt belongs to the cobalt alloys classification, while 1070A 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 R31537 cobalt and the bottom bar is 1070A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
68
Elongation at Break, % 14 to 23
2.3 to 33
Fatigue Strength, MPa 310 to 480
17 to 51
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 87
26
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
68 to 140
Tensile Strength: Yield (Proof), MPa 590 to 940
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 320
400
Melting Completion (Liquidus), °C 1360
640
Melting Onset (Solidus), °C 1290
640
Specific Heat Capacity, J/kg-K 450
900
Thermal Conductivity, W/m-K 13
230
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
60
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
200

Otherwise Unclassified Properties

Density, g/cm3 8.4
2.7
Embodied Carbon, kg CO2/kg material 8.1
8.2
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 530
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
3.0 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
2.1 to 100
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 33 to 44
7.0 to 14
Strength to Weight: Bending, points 26 to 32
14 to 22
Thermal Diffusivity, mm2/s 3.4
94
Thermal Shock Resistance, points 24 to 32
3.1 to 6.3

Alloy Composition

Aluminum (Al), % 0
99.7 to 100
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.9 to 69
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 0 to 0.75
0 to 0.25
Magnesium (Mg), % 0
0 to 0.030
Manganese (Mn), % 0 to 1.0
0 to 0.030
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Titanium (Ti), % 0
0 to 0.030
Zinc (Zn), % 0
0 to 0.070

Comparable Variants