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R30008 Cobalt vs. EN AC-46300 Aluminum

R30008 cobalt belongs to the cobalt alloys classification, while EN AC-46300 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-46300 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
79
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 83
27
Tensile Strength: Ultimate (UTS), MPa 950 to 1700
200
Tensile Strength: Yield (Proof), MPa 500 to 1080
110

Thermal Properties

Latent Heat of Fusion, J/g 320
490
Melting Completion (Liquidus), °C 1400
630
Melting Onset (Solidus), °C 1330
530
Specific Heat Capacity, J/kg-K 450
880
Thermal Expansion, µm/m-K 13
22

Otherwise Unclassified Properties

Base Metal Price, % relative 95
10
Density, g/cm3 8.4
2.9
Embodied Carbon, kg CO2/kg material 8.1
7.7
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 400
1060

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 2720
89
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
49
Strength to Weight: Axial, points 31 to 56
20
Strength to Weight: Bending, points 25 to 37
27
Thermal Shock Resistance, points 25 to 44
9.1

Alloy Composition

Aluminum (Al), % 0
84 to 90
Boron (B), % 0 to 0.0010
0
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 18.5 to 21.5
0
Cobalt (Co), % 39 to 42
0
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 7.6 to 20
0 to 0.8
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 0
0.3 to 0.6
Manganese (Mn), % 1.0 to 2.0
0.2 to 0.65
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
6.5 to 8.0
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.65
Residuals, % 0
0 to 0.55