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7108A Aluminum vs. C84200 Brass

7108A aluminum belongs to the aluminum alloys classification, while C84200 brass 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 7108A aluminum and the bottom bar is C84200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 11 to 13
15
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
40
Tensile Strength: Ultimate (UTS), MPa 350
250
Tensile Strength: Yield (Proof), MPa 290 to 300
120

Thermal Properties

Latent Heat of Fusion, J/g 380
180
Maximum Temperature: Mechanical, °C 210
150
Melting Completion (Liquidus), °C 630
990
Melting Onset (Solidus), °C 520
840
Specific Heat Capacity, J/kg-K 870
370
Thermal Conductivity, W/m-K 150
72
Thermal Expansion, µm/m-K 24
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
16
Electrical Conductivity: Equal Weight (Specific), % IACS 110
17

Otherwise Unclassified Properties

Base Metal Price, % relative 10
30
Density, g/cm3 2.9
8.5
Embodied Carbon, kg CO2/kg material 8.3
3.1
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 1150
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 44
31
Resilience: Unit (Modulus of Resilience), kJ/m3 610 to 640
72
Stiffness to Weight: Axial, points 13
6.9
Stiffness to Weight: Bending, points 47
18
Strength to Weight: Axial, points 33 to 34
8.2
Strength to Weight: Bending, points 38
10
Thermal Diffusivity, mm2/s 59
23
Thermal Shock Resistance, points 15 to 16
9.1

Alloy Composition

Aluminum (Al), % 91.6 to 94.4
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Chromium (Cr), % 0 to 0.040
0
Copper (Cu), % 0 to 0.050
78 to 82
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0 to 0.4
Lead (Pb), % 0
2.0 to 3.0
Magnesium (Mg), % 0.7 to 1.5
0
Manganese (Mn), % 0 to 0.050
0
Nickel (Ni), % 0
0 to 0.8
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.2
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
4.0 to 6.0
Titanium (Ti), % 0 to 0.030
0
Zinc (Zn), % 4.8 to 5.8
10 to 16
Zirconium (Zr), % 0.15 to 0.25
0
Residuals, % 0
0 to 0.7