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4145 Aluminum vs. C63600 Bronze

4145 aluminum belongs to the aluminum alloys classification, while C63600 bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 C63600 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 2.2
30 to 66
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 28
42
Shear Strength, MPa 69
320 to 360
Tensile Strength: Ultimate (UTS), MPa 120
410 to 540
Tensile Strength: Yield (Proof), MPa 68
150 to 260

Thermal Properties

Latent Heat of Fusion, J/g 540
230
Maximum Temperature: Mechanical, °C 160
210
Melting Completion (Liquidus), °C 590
1030
Melting Onset (Solidus), °C 520
980
Specific Heat Capacity, J/kg-K 880
410
Thermal Conductivity, W/m-K 100
57
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
12
Electrical Conductivity: Equal Weight (Specific), % IACS 84
13

Otherwise Unclassified Properties

Base Metal Price, % relative 10
30
Density, g/cm3 2.8
8.6
Embodied Carbon, kg CO2/kg material 7.6
2.8
Embodied Energy, MJ/kg 140
45
Embodied Water, L/kg 1040
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
98 to 290
Resilience: Unit (Modulus of Resilience), kJ/m3 31
100 to 300
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 12
13 to 18
Strength to Weight: Bending, points 19
14 to 17
Thermal Diffusivity, mm2/s 42
16
Thermal Shock Resistance, points 5.5
15 to 20

Alloy Composition

Aluminum (Al), % 83 to 87.4
3.0 to 4.0
Arsenic (As), % 0
0 to 0.15
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
93 to 96.3
Iron (Fe), % 0 to 0.8
0 to 0.15
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 0.15
Silicon (Si), % 9.3 to 10.7
0.7 to 1.3
Tin (Sn), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.2
0 to 0.5
Residuals, % 0
0 to 0.5