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4145 Aluminum vs. C93800 Bronze

4145 aluminum belongs to the aluminum alloys classification, while C93800 bronze belongs to the copper alloys. There are 28 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 C93800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
96
Elongation at Break, % 2.2
9.7
Poisson's Ratio 0.33
0.35
Shear Modulus, GPa 28
35
Tensile Strength: Ultimate (UTS), MPa 120
200
Tensile Strength: Yield (Proof), MPa 68
120

Thermal Properties

Latent Heat of Fusion, J/g 540
170
Maximum Temperature: Mechanical, °C 160
140
Melting Completion (Liquidus), °C 590
940
Melting Onset (Solidus), °C 520
850
Specific Heat Capacity, J/kg-K 880
340
Thermal Conductivity, W/m-K 100
52
Thermal Expansion, µm/m-K 21
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
11
Electrical Conductivity: Equal Weight (Specific), % IACS 84
11

Otherwise Unclassified Properties

Base Metal Price, % relative 10
31
Density, g/cm3 2.8
9.1
Embodied Carbon, kg CO2/kg material 7.6
3.2
Embodied Energy, MJ/kg 140
51
Embodied Water, L/kg 1040
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
17
Resilience: Unit (Modulus of Resilience), kJ/m3 31
70
Stiffness to Weight: Axial, points 14
5.9
Stiffness to Weight: Bending, points 50
17
Strength to Weight: Axial, points 12
6.1
Strength to Weight: Bending, points 19
8.4
Thermal Diffusivity, mm2/s 42
17
Thermal Shock Resistance, points 5.5
8.1

Alloy Composition

Aluminum (Al), % 83 to 87.4
0 to 0.0050
Antimony (Sb), % 0
0 to 0.8
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
75 to 79
Iron (Fe), % 0 to 0.8
0 to 0.15
Lead (Pb), % 0
13 to 16
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 9.3 to 10.7
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
6.3 to 7.5
Zinc (Zn), % 0 to 0.2
0 to 0.8
Residuals, % 0
0 to 1.0