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384.0 Aluminum vs. R30035 Cobalt

384.0 aluminum belongs to the aluminum alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 28 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 384.0 aluminum and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 74
220 to 230
Elongation at Break, % 2.5
9.0 to 46
Fatigue Strength, MPa 140
170 to 740
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
84 to 89
Tensile Strength: Ultimate (UTS), MPa 330
900 to 1900
Tensile Strength: Yield (Proof), MPa 170
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 550
320
Melting Completion (Liquidus), °C 580
1440
Melting Onset (Solidus), °C 530
1320
Specific Heat Capacity, J/kg-K 870
440
Thermal Conductivity, W/m-K 96
11
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 69
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 11
100
Density, g/cm3 2.9
8.7
Embodied Carbon, kg CO2/kg material 7.4
10
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 1010
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 190
210 to 5920
Stiffness to Weight: Axial, points 14
14 to 15
Stiffness to Weight: Bending, points 49
23 to 24
Strength to Weight: Axial, points 32
29 to 61
Strength to Weight: Bending, points 37
24 to 39
Thermal Diffusivity, mm2/s 39
3.0
Thermal Shock Resistance, points 15
23 to 46

Alloy Composition


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Aluminum (Al), % 77.3 to 86.5
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
29.1 to 39
Copper (Cu), % 3.0 to 4.5
0
Iron (Fe), % 0 to 1.3
0 to 1.0
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0 to 0.5
33 to 37
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 10.5 to 12
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0 to 0.35
0
Titanium (Ti), % 0
0 to 1.0
Zinc (Zn), % 0 to 3.0
0
Residuals, % 0 to 0.5
0