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R30075 Cobalt vs. A535.0 Aluminum

R30075 cobalt belongs to the cobalt alloys classification, while A535.0 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (3, 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 R30075 cobalt and the bottom bar is A535.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
67
Elongation at Break, % 12
9.0
Fatigue Strength, MPa 250 to 840
95
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 82 to 98
25
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
250
Tensile Strength: Yield (Proof), MPa 480 to 840
120

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Melting Completion (Liquidus), °C 1360
620
Melting Onset (Solidus), °C 1290
550
Specific Heat Capacity, J/kg-K 450
910
Thermal Conductivity, W/m-K 13
100
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
23
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
79

Otherwise Unclassified Properties

Density, g/cm3 8.4
2.6
Embodied Carbon, kg CO2/kg material 8.1
9.3
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 530
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 140
19
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1410
120
Stiffness to Weight: Axial, points 14 to 17
14
Stiffness to Weight: Bending, points 24 to 25
51
Strength to Weight: Axial, points 26 to 42
26
Strength to Weight: Bending, points 22 to 31
33
Thermal Diffusivity, mm2/s 3.5
42
Thermal Shock Resistance, points 21 to 29
11

Alloy Composition

Aluminum (Al), % 0 to 0.1
91.4 to 93.4
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 58.7 to 68
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0 to 0.75
0 to 0.2
Magnesium (Mg), % 0
6.5 to 7.5
Manganese (Mn), % 0 to 1.0
0.1 to 0.25
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 0.5
0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.1
0 to 0.25
Tungsten (W), % 0 to 0.2
0
Residuals, % 0
0 to 0.15