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4145 Aluminum vs. C64800 Bronze

4145 aluminum belongs to the aluminum alloys classification, while C64800 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 4145 aluminum and the bottom bar is C64800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
120
Elongation at Break, % 2.2
8.0
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 28
44
Shear Strength, MPa 69
380
Tensile Strength: Ultimate (UTS), MPa 120
640
Tensile Strength: Yield (Proof), MPa 68
630

Thermal Properties

Latent Heat of Fusion, J/g 540
220
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 590
1090
Melting Onset (Solidus), °C 520
1030
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 100
260
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
65
Electrical Conductivity: Equal Weight (Specific), % IACS 84
66

Otherwise Unclassified Properties

Base Metal Price, % relative 10
33
Density, g/cm3 2.8
8.9
Embodied Carbon, kg CO2/kg material 7.6
2.7
Embodied Energy, MJ/kg 140
43
Embodied Water, L/kg 1040
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
51
Resilience: Unit (Modulus of Resilience), kJ/m3 31
1680
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 12
20
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 42
75
Thermal Shock Resistance, points 5.5
23

Alloy Composition

Aluminum (Al), % 83 to 87.4
0
Chromium (Cr), % 0 to 0.15
0 to 0.090
Cobalt (Co), % 0
1.0 to 3.0
Copper (Cu), % 3.3 to 4.7
92.4 to 98.8
Iron (Fe), % 0 to 0.8
0 to 1.0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0
0 to 0.5
Silicon (Si), % 9.3 to 10.7
0.2 to 1.0
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 0 to 0.2
0 to 0.5
Residuals, % 0
0 to 0.5