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EN AC-45000 Aluminum vs. R30035 Cobalt

EN AC-45000 aluminum belongs to the aluminum alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 EN AC-45000 aluminum and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
220 to 230
Elongation at Break, % 1.1
9.0 to 46
Fatigue Strength, MPa 75
170 to 740
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
84 to 89
Tensile Strength: Ultimate (UTS), MPa 180
900 to 1900
Tensile Strength: Yield (Proof), MPa 110
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 470
320
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 520
1320
Specific Heat Capacity, J/kg-K 870
440
Thermal Conductivity, W/m-K 120
11
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 81
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 11
100
Density, g/cm3 3.0
8.7
Embodied Carbon, kg CO2/kg material 7.7
10
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 1070
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 80
210 to 5920
Stiffness to Weight: Axial, points 14
14 to 15
Stiffness to Weight: Bending, points 47
23 to 24
Strength to Weight: Axial, points 17
29 to 61
Strength to Weight: Bending, points 24
24 to 39
Thermal Diffusivity, mm2/s 47
3.0
Thermal Shock Resistance, points 8.0
23 to 46

Alloy Composition

Aluminum (Al), % 82.2 to 91.8
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0 to 0.15
19 to 21
Cobalt (Co), % 0
29.1 to 39
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 0 to 1.0
0 to 1.0
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0 to 0.55
0
Manganese (Mn), % 0.2 to 0.65
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0 to 0.45
33 to 37
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 5.0 to 7.0
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0 to 1.0
Zinc (Zn), % 0 to 2.0
0
Residuals, % 0 to 0.35
0