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R30008 Cobalt vs. EN AC-47100 Aluminum

R30008 cobalt belongs to the cobalt alloys classification, while EN AC-47100 aluminum belongs to the aluminum alloys. There are 23 material properties with values for both materials. Properties with values for just one material (7, 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 R30008 cobalt and the bottom bar is EN AC-47100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
73
Elongation at Break, % 1.1 to 73
1.1
Fatigue Strength, MPa 320 to 530
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 83
27
Tensile Strength: Ultimate (UTS), MPa 950 to 1700
270
Tensile Strength: Yield (Proof), MPa 500 to 1080
160

Thermal Properties

Latent Heat of Fusion, J/g 320
570
Melting Completion (Liquidus), °C 1400
590
Melting Onset (Solidus), °C 1330
560
Specific Heat Capacity, J/kg-K 450
890
Thermal Expansion, µm/m-K 13
21

Otherwise Unclassified Properties

Base Metal Price, % relative 95
9.5
Density, g/cm3 8.4
2.6
Embodied Carbon, kg CO2/kg material 8.1
7.6
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 400
1030

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 2720
170
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 31 to 56
28
Strength to Weight: Bending, points 25 to 37
35
Thermal Shock Resistance, points 25 to 44
12

Alloy Composition

Aluminum (Al), % 0
81.4 to 88.8
Boron (B), % 0 to 0.0010
0
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 18.5 to 21.5
0 to 0.1
Cobalt (Co), % 39 to 42
0
Copper (Cu), % 0
0.7 to 1.2
Iron (Fe), % 7.6 to 20
0 to 1.3
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 0
0 to 0.35
Manganese (Mn), % 1.0 to 2.0
0 to 0.55
Molybdenum (Mo), % 6.5 to 7.5
0
Nickel (Ni), % 15 to 18
0 to 0.3
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 1.2
10.5 to 13.5
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.55
Residuals, % 0
0 to 0.25