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R31537 Cobalt vs. A356.0 Aluminum

R31537 cobalt belongs to the cobalt alloys classification, while A356.0 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 A356.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
70
Elongation at Break, % 14 to 23
3.0 to 6.0
Fatigue Strength, MPa 310 to 480
50 to 90
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 87
26
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
160 to 270
Tensile Strength: Yield (Proof), MPa 590 to 940
83 to 200

Thermal Properties

Latent Heat of Fusion, J/g 320
500
Melting Completion (Liquidus), °C 1360
610
Melting Onset (Solidus), °C 1290
570
Specific Heat Capacity, J/kg-K 450
900
Thermal Conductivity, W/m-K 13
150
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
140

Otherwise Unclassified Properties

Density, g/cm3 8.4
2.6
Embodied Carbon, kg CO2/kg material 8.1
8.0
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 530
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
4.8 to 15
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
49 to 300
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 33 to 44
17 to 29
Strength to Weight: Bending, points 26 to 32
25 to 36
Thermal Diffusivity, mm2/s 3.4
64
Thermal Shock Resistance, points 24 to 32
7.6 to 13

Alloy Composition

Aluminum (Al), % 0
91.1 to 93.3
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 0.2
Iron (Fe), % 0 to 0.75
0 to 0.2
Magnesium (Mg), % 0
0.25 to 0.45
Manganese (Mn), % 0 to 1.0
0 to 0.1
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
6.5 to 7.5
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15