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C37100 Brass vs. 7108 Aluminum

C37100 brass belongs to the copper alloys classification, while 7108 aluminum belongs to the aluminum alloys. There are 29 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 C37100 brass and the bottom bar is 7108 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
69
Elongation at Break, % 8.0 to 40
11
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 40
26
Shear Strength, MPa 260 to 300
210
Tensile Strength: Ultimate (UTS), MPa 370 to 520
350
Tensile Strength: Yield (Proof), MPa 150 to 390
290

Thermal Properties

Latent Heat of Fusion, J/g 170
380
Maximum Temperature: Mechanical, °C 120
210
Melting Completion (Liquidus), °C 900
630
Melting Onset (Solidus), °C 890
530
Specific Heat Capacity, J/kg-K 380
880
Thermal Conductivity, W/m-K 120
150
Thermal Expansion, µm/m-K 21
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
39
Electrical Conductivity: Equal Weight (Specific), % IACS 30
120

Otherwise Unclassified Properties

Base Metal Price, % relative 23
9.5
Density, g/cm3 8.0
2.9
Embodied Carbon, kg CO2/kg material 2.7
8.3
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 320
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 120
38
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 750
620
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 20
47
Strength to Weight: Axial, points 13 to 18
34
Strength to Weight: Bending, points 14 to 18
38
Thermal Diffusivity, mm2/s 39
59
Thermal Shock Resistance, points 12 to 17
16

Alloy Composition

Aluminum (Al), % 0
92.4 to 94.7
Copper (Cu), % 58 to 62
0 to 0.050
Iron (Fe), % 0 to 0.15
0 to 0.1
Lead (Pb), % 0.6 to 1.2
0
Magnesium (Mg), % 0
0.7 to 1.4
Manganese (Mn), % 0
0 to 0.050
Silicon (Si), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.050
Zinc (Zn), % 36.3 to 41.4
4.5 to 5.5
Zirconium (Zr), % 0
0.12 to 0.25
Residuals, % 0
0 to 0.15