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R30008 Cobalt vs. 2219 Aluminum

R30008 cobalt belongs to the cobalt alloys classification, while 2219 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 2219 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
72
Elongation at Break, % 1.1 to 73
2.2 to 20
Fatigue Strength, MPa 320 to 530
90 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 83
27
Tensile Strength: Ultimate (UTS), MPa 950 to 1700
180 to 480
Tensile Strength: Yield (Proof), MPa 500 to 1080
88 to 390

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1330
540
Specific Heat Capacity, J/kg-K 450
870
Thermal Expansion, µm/m-K 13
22

Otherwise Unclassified Properties

Base Metal Price, % relative 95
11
Density, g/cm3 8.4
3.1
Embodied Carbon, kg CO2/kg material 8.1
8.2
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 400
1130

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 2720
54 to 1060
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
44
Strength to Weight: Axial, points 31 to 56
16 to 43
Strength to Weight: Bending, points 25 to 37
23 to 44
Thermal Shock Resistance, points 25 to 44
8.2 to 22

Alloy Composition

Aluminum (Al), % 0
91.5 to 93.8
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
5.8 to 6.8
Iron (Fe), % 7.6 to 20
0 to 0.3
Magnesium (Mg), % 0
0 to 0.020
Manganese (Mn), % 1.0 to 2.0
0.2 to 0.4
Molybdenum (Mo), % 6.5 to 7.5
0
Nickel (Ni), % 15 to 18
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 1.2
0 to 0.2
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0.020 to 0.1
Vanadium (V), % 0
0.050 to 0.15
Zinc (Zn), % 0
0 to 0.1
Zirconium (Zr), % 0
0.1 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants