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4145 Aluminum vs. C90200 Bronze

4145 aluminum belongs to the aluminum alloys classification, while C90200 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 C90200 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 2.2
30
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 28
41
Tensile Strength: Ultimate (UTS), MPa 120
260
Tensile Strength: Yield (Proof), MPa 68
110

Thermal Properties

Latent Heat of Fusion, J/g 540
200
Maximum Temperature: Mechanical, °C 160
180
Melting Completion (Liquidus), °C 590
1050
Melting Onset (Solidus), °C 520
880
Specific Heat Capacity, J/kg-K 880
370
Thermal Conductivity, W/m-K 100
62
Thermal Expansion, µm/m-K 21
18

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 10
34
Density, g/cm3 2.8
8.8
Embodied Carbon, kg CO2/kg material 7.6
3.3
Embodied Energy, MJ/kg 140
53
Embodied Water, L/kg 1040
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
63
Resilience: Unit (Modulus of Resilience), kJ/m3 31
55
Stiffness to Weight: Axial, points 14
7.0
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 12
8.3
Strength to Weight: Bending, points 19
10
Thermal Diffusivity, mm2/s 42
19
Thermal Shock Resistance, points 5.5
9.5

Alloy Composition

Aluminum (Al), % 83 to 87.4
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
91 to 94
Iron (Fe), % 0 to 0.8
0 to 0.2
Lead (Pb), % 0
0 to 0.3
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 0.050
Silicon (Si), % 9.3 to 10.7
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
6.0 to 8.0
Zinc (Zn), % 0 to 0.2
0 to 0.5
Residuals, % 0
0 to 0.6