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7175 Aluminum vs. C95800 Bronze

7175 aluminum belongs to the aluminum alloys classification, while C95800 bronze belongs to the copper alloys. There are 28 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 7175 aluminum and the bottom bar is C95800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Elongation at Break, % 3.8 to 5.9
22
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 26
44
Tensile Strength: Ultimate (UTS), MPa 520 to 570
660
Tensile Strength: Yield (Proof), MPa 430 to 490
270

Thermal Properties

Latent Heat of Fusion, J/g 380
230
Maximum Temperature: Mechanical, °C 180
230
Melting Completion (Liquidus), °C 640
1060
Melting Onset (Solidus), °C 480
1040
Specific Heat Capacity, J/kg-K 870
440
Thermal Conductivity, W/m-K 140
36
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 99
7.6

Otherwise Unclassified Properties

Base Metal Price, % relative 10
29
Density, g/cm3 3.0
8.3
Embodied Carbon, kg CO2/kg material 8.2
3.4
Embodied Energy, MJ/kg 150
55
Embodied Water, L/kg 1130
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 29
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1310 to 1730
310
Stiffness to Weight: Axial, points 13
7.9
Stiffness to Weight: Bending, points 46
20
Strength to Weight: Axial, points 48 to 52
22
Strength to Weight: Bending, points 48 to 51
20
Thermal Diffusivity, mm2/s 53
9.9
Thermal Shock Resistance, points 23 to 25
23

Alloy Composition

Aluminum (Al), % 88 to 91.4
8.5 to 9.5
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
79 to 83.2
Iron (Fe), % 0 to 0.2
3.5 to 4.5
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.1
0.8 to 1.5
Nickel (Ni), % 0
4.0 to 5.0
Silicon (Si), % 0 to 0.15
0 to 0.1
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 5.1 to 6.1
0
Residuals, % 0
0 to 0.5