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4147 Aluminum vs. R30155 Cobalt

4147 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 (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 4147 aluminum and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
210
Elongation at Break, % 3.3
34
Fatigue Strength, MPa 42
310
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
81
Shear Strength, MPa 63
570
Tensile Strength: Ultimate (UTS), MPa 110
850
Tensile Strength: Yield (Proof), MPa 59
390

Thermal Properties

Latent Heat of Fusion, J/g 570
300
Maximum Temperature: Mechanical, °C 160
1100
Melting Completion (Liquidus), °C 580
1470
Melting Onset (Solidus), °C 560
1420
Specific Heat Capacity, J/kg-K 900
450
Thermal Conductivity, W/m-K 130
12
Thermal Expansion, µm/m-K 21
14

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
80
Density, g/cm3 2.5
8.5
Embodied Carbon, kg CO2/kg material 7.7
9.7
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1050
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1
230
Resilience: Unit (Modulus of Resilience), kJ/m3 24
370
Stiffness to Weight: Axial, points 16
14
Stiffness to Weight: Bending, points 55
23
Strength to Weight: Axial, points 12
28
Strength to Weight: Bending, points 20
24
Thermal Diffusivity, mm2/s 58
3.2
Thermal Shock Resistance, points 5.2
21

Alloy Composition

Aluminum (Al), % 85 to 88.9
0
Beryllium (Be), % 0 to 0.00030
0
Carbon (C), % 0
0.080 to 0.16
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.8
24.3 to 36.2
Magnesium (Mg), % 0.1 to 0.5
0
Manganese (Mn), % 0 to 0.1
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
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), % 11 to 13
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0