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R30008 Cobalt vs. EN AC-45300 Aluminum

R30008 cobalt belongs to the cobalt alloys classification, while EN AC-45300 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-45300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
71
Elongation at Break, % 1.1 to 73
1.0 to 2.8
Fatigue Strength, MPa 320 to 530
59 to 72
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 83
27
Tensile Strength: Ultimate (UTS), MPa 950 to 1700
220 to 290
Tensile Strength: Yield (Proof), MPa 500 to 1080
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 320
470
Melting Completion (Liquidus), °C 1400
630
Melting Onset (Solidus), °C 1330
590
Specific Heat Capacity, J/kg-K 450
890
Thermal Expansion, µm/m-K 13
22

Otherwise Unclassified Properties

Base Metal Price, % relative 95
9.5
Density, g/cm3 8.4
2.7
Embodied Carbon, kg CO2/kg material 8.1
8.0
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 400
1120

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 2720
160 to 390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 31 to 56
23 to 29
Strength to Weight: Bending, points 25 to 37
30 to 35
Thermal Shock Resistance, points 25 to 44
10 to 13

Alloy Composition

Aluminum (Al), % 0
90.2 to 94.2
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
1.0 to 1.5
Iron (Fe), % 7.6 to 20
0 to 0.65
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 0
0.35 to 0.65
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 0.25
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 1.2
4.5 to 5.5
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15