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851.0 Aluminum vs. CC491K Bronze

851.0 aluminum belongs to the aluminum alloys classification, while CC491K bronze belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (5, 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 851.0 aluminum and the bottom bar is CC491K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 3.9 to 9.1
13
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
40
Tensile Strength: Ultimate (UTS), MPa 130 to 140
260

Thermal Properties

Latent Heat of Fusion, J/g 410
190
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 630
980
Melting Onset (Solidus), °C 360
900
Specific Heat Capacity, J/kg-K 850
370
Thermal Conductivity, W/m-K 180
71
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
15
Electrical Conductivity: Equal Weight (Specific), % IACS 140
15

Otherwise Unclassified Properties

Base Metal Price, % relative 14
31
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.4
3.1
Embodied Energy, MJ/kg 160
51
Embodied Water, L/kg 1140
350

Common Calculations

Stiffness to Weight: Axial, points 13
6.7
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 12 to 13
8.1
Strength to Weight: Bending, points 19 to 20
10
Thermal Diffusivity, mm2/s 69
22
Thermal Shock Resistance, points 6.1 to 6.3
9.3

Alloy Composition

Aluminum (Al), % 86.6 to 91.5
0 to 0.010
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0.7 to 1.3
81 to 87
Iron (Fe), % 0 to 0.7
0 to 0.3
Lead (Pb), % 0
4.0 to 6.0
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0.3 to 0.7
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 2.0 to 3.0
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 5.5 to 7.0
4.0 to 6.0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0
4.0 to 6.0
Residuals, % 0 to 0.3
0