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EN AC-44400 Aluminum vs. R30003 Cobalt

EN AC-44400 aluminum belongs to the aluminum alloys classification, while R30003 cobalt belongs to the cobalt alloys. There are 27 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-44400 aluminum and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
210
Elongation at Break, % 4.1
10 to 73
Fatigue Strength, MPa 79
320 to 560
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
83
Tensile Strength: Ultimate (UTS), MPa 210
970 to 1720
Tensile Strength: Yield (Proof), MPa 110
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 540
310
Melting Completion (Liquidus), °C 600
1400
Melting Onset (Solidus), °C 590
1440
Specific Heat Capacity, J/kg-K 900
450
Thermal Conductivity, W/m-K 140
13
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
95
Density, g/cm3 2.6
8.4
Embodied Carbon, kg CO2/kg material 7.8
8.0
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1080
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 85
600 to 2790
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
24
Strength to Weight: Axial, points 23
32 to 57
Strength to Weight: Bending, points 31
26 to 38
Thermal Diffusivity, mm2/s 60
3.3
Thermal Shock Resistance, points 9.8
26 to 45

Alloy Composition

Aluminum (Al), % 87.1 to 92
0
Boron (B), % 0
0 to 0.1
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.65
10 to 20.5
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 0 to 0.050
14 to 16
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 8.0 to 11
0 to 1.2
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0