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B390.0 Aluminum vs. R30003 Cobalt

B390.0 aluminum belongs to the aluminum alloys classification, while R30003 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (2, 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 B390.0 aluminum and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
210
Elongation at Break, % 0.88
10 to 73
Fatigue Strength, MPa 170
320 to 560
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 29
83
Tensile Strength: Ultimate (UTS), MPa 320
970 to 1720
Tensile Strength: Yield (Proof), MPa 250
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 640
310
Melting Completion (Liquidus), °C 580
1400
Melting Onset (Solidus), °C 580
1440
Specific Heat Capacity, J/kg-K 880
450
Thermal Conductivity, W/m-K 130
13
Thermal Expansion, µm/m-K 20
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 88
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
95
Density, g/cm3 2.8
8.4
Embodied Carbon, kg CO2/kg material 7.3
8.0
Embodied Energy, MJ/kg 130
110
Embodied Water, L/kg 940
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 410
600 to 2790
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 32
32 to 57
Strength to Weight: Bending, points 38
26 to 38
Thermal Diffusivity, mm2/s 55
3.3
Thermal Shock Resistance, points 15
26 to 45

Alloy Composition

Aluminum (Al), % 72.7 to 79.6
0
Boron (B), % 0
0 to 0.1
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 1.3
10 to 20.5
Magnesium (Mg), % 0.45 to 0.65
0
Manganese (Mn), % 0 to 0.5
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 0 to 0.1
14 to 16
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 16 to 18
0 to 1.2
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 1.5
0
Residuals, % 0 to 0.2
0