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EN AC-45100 Aluminum vs. R30003 Cobalt

EN AC-45100 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-45100 aluminum and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
210
Elongation at Break, % 1.0 to 2.8
10 to 73
Fatigue Strength, MPa 82 to 99
320 to 560
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
83
Tensile Strength: Ultimate (UTS), MPa 300 to 360
970 to 1720
Tensile Strength: Yield (Proof), MPa 210 to 320
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 470
310
Melting Completion (Liquidus), °C 630
1400
Melting Onset (Solidus), °C 550
1440
Specific Heat Capacity, J/kg-K 890
450
Thermal Conductivity, W/m-K 140
13
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 95
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 10
95
Density, g/cm3 2.8
8.4
Embodied Carbon, kg CO2/kg material 7.9
8.0
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1100
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 710
600 to 2790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 30 to 35
32 to 57
Strength to Weight: Bending, points 35 to 39
26 to 38
Thermal Diffusivity, mm2/s 54
3.3
Thermal Shock Resistance, points 14 to 16
26 to 45

Alloy Composition

Aluminum (Al), % 88 to 92.8
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), % 2.6 to 3.6
0
Iron (Fe), % 0 to 0.6
10 to 20.5
Lead (Pb), % 0 to 0.1
0
Magnesium (Mg), % 0.15 to 0.45
0
Manganese (Mn), % 0 to 0.55
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 0 to 0.1
14 to 16
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 4.5 to 6.0
0 to 1.2
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0