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EN AC-45000 Aluminum vs. R30155 Cobalt

EN AC-45000 aluminum belongs to the aluminum alloys classification, while R30155 cobalt belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 77
220
Elastic (Young's, Tensile) Modulus, GPa 73
210
Elongation at Break, % 1.1
34
Fatigue Strength, MPa 75
310
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
81
Tensile Strength: Ultimate (UTS), MPa 180
850
Tensile Strength: Yield (Proof), MPa 110
390

Thermal Properties

Latent Heat of Fusion, J/g 470
300
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 520
1420
Specific Heat Capacity, J/kg-K 870
450
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 22
14

Otherwise Unclassified Properties

Base Metal Price, % relative 11
80
Density, g/cm3 3.0
8.5
Embodied Carbon, kg CO2/kg material 7.7
9.7
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1070
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7
230
Resilience: Unit (Modulus of Resilience), kJ/m3 80
370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
23
Strength to Weight: Axial, points 17
28
Strength to Weight: Bending, points 24
24
Thermal Diffusivity, mm2/s 47
3.2
Thermal Shock Resistance, points 8.0
21

Alloy Composition

Aluminum (Al), % 82.2 to 91.8
0
Carbon (C), % 0
0.080 to 0.16
Chromium (Cr), % 0 to 0.15
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 0 to 1.0
24.3 to 36.2
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0 to 0.55
0
Manganese (Mn), % 0.2 to 0.65
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0 to 0.45
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 5.0 to 7.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 0 to 2.0
0
Residuals, % 0 to 0.35
0