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201.0 Aluminum vs. R30008 Cobalt

201.0 aluminum belongs to the aluminum alloys classification, while R30008 cobalt belongs to the cobalt alloys. There are 22 material properties with values for both materials. Properties with values for just one material (12, 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 201.0 aluminum and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
210
Elongation at Break, % 4.4 to 20
1.1 to 73
Fatigue Strength, MPa 120 to 150
320 to 530
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
83
Tensile Strength: Ultimate (UTS), MPa 370 to 470
950 to 1700
Tensile Strength: Yield (Proof), MPa 220 to 400
500 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 390
320
Melting Completion (Liquidus), °C 650
1400
Melting Onset (Solidus), °C 570
1330
Specific Heat Capacity, J/kg-K 870
450
Thermal Expansion, µm/m-K 19
13

Otherwise Unclassified Properties

Base Metal Price, % relative 38
95
Density, g/cm3 3.1
8.4
Embodied Carbon, kg CO2/kg material 8.7
8.1
Embodied Energy, MJ/kg 160
110

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 1160
590 to 2720
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 33 to 42
31 to 56
Strength to Weight: Bending, points 37 to 44
25 to 37
Thermal Shock Resistance, points 19 to 25
25 to 44

Alloy Composition


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Aluminum (Al), % 92.1 to 95.1
0
Boron (B), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
18.5 to 21.5
Cobalt (Co), % 0
39 to 42
Copper (Cu), % 4.0 to 5.2
0
Iron (Fe), % 0 to 0.15
7.6 to 20
Magnesium (Mg), % 0.15 to 0.55
0
Manganese (Mn), % 0.2 to 0.5
1.0 to 2.0
Molybdenum (Mo), % 0
6.5 to 7.5
Nickel (Ni), % 0
15 to 18
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.1
0 to 1.2
Silver (Ag), % 0.4 to 1.0
0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0.15 to 0.35
0
Residuals, % 0 to 0.1
0