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5251 Aluminum vs. C64700 Bronze

5251 aluminum belongs to the aluminum alloys classification, while C64700 bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 5251 aluminum and the bottom bar is C64700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
120
Elongation at Break, % 2.0 to 19
9.0
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
44
Shear Strength, MPa 110 to 160
390
Tensile Strength: Ultimate (UTS), MPa 180 to 280
660
Tensile Strength: Yield (Proof), MPa 67 to 250
560

Thermal Properties

Latent Heat of Fusion, J/g 400
220
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 650
1090
Melting Onset (Solidus), °C 610
1030
Specific Heat Capacity, J/kg-K 900
390
Thermal Conductivity, W/m-K 150
210
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
38
Electrical Conductivity: Equal Weight (Specific), % IACS 120
38

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
31
Density, g/cm3 2.7
8.9
Embodied Carbon, kg CO2/kg material 8.5
2.7
Embodied Energy, MJ/kg 150
43
Embodied Water, L/kg 1180
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
57
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
1370
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 18 to 29
21
Strength to Weight: Bending, points 26 to 35
19
Thermal Diffusivity, mm2/s 61
59
Thermal Shock Resistance, points 7.9 to 13
24

Alloy Composition

Aluminum (Al), % 95.5 to 98.2
0
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
95.8 to 98
Iron (Fe), % 0 to 0.5
0 to 0.1
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 1.7 to 2.4
0
Manganese (Mn), % 0.1 to 0.5
0
Nickel (Ni), % 0
1.6 to 2.2
Silicon (Si), % 0 to 0.4
0.4 to 0.8
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
0 to 0.5
Residuals, % 0
0 to 0.5