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C69300 Brass vs. 2618 Aluminum

C69300 brass belongs to the copper alloys classification, while 2618 aluminum belongs to the aluminum alloys. There are 29 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 C69300 brass and the bottom bar is 2618 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 8.5 to 15
5.8
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
27
Shear Strength, MPa 330 to 370
260
Tensile Strength: Ultimate (UTS), MPa 550 to 630
420
Tensile Strength: Yield (Proof), MPa 300 to 390
350

Thermal Properties

Latent Heat of Fusion, J/g 240
390
Maximum Temperature: Mechanical, °C 160
210
Melting Completion (Liquidus), °C 880
640
Melting Onset (Solidus), °C 860
550
Specific Heat Capacity, J/kg-K 400
880
Thermal Conductivity, W/m-K 38
160
Thermal Expansion, µm/m-K 19
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
37
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
110

Otherwise Unclassified Properties

Base Metal Price, % relative 26
11
Density, g/cm3 8.2
2.9
Embodied Carbon, kg CO2/kg material 2.7
8.3
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 310
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 47 to 70
23
Resilience: Unit (Modulus of Resilience), kJ/m3 400 to 700
850
Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
47
Strength to Weight: Axial, points 19 to 21
40
Strength to Weight: Bending, points 18 to 20
42
Thermal Diffusivity, mm2/s 12
62
Thermal Shock Resistance, points 19 to 22
19

Alloy Composition

Aluminum (Al), % 0
92.4 to 94.9
Copper (Cu), % 73 to 77
1.9 to 2.7
Iron (Fe), % 0 to 0.1
0.9 to 1.3
Lead (Pb), % 0 to 0.090
0
Magnesium (Mg), % 0
1.3 to 1.8
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.1
0.9 to 1.2
Phosphorus (P), % 0.040 to 0.15
0
Silicon (Si), % 2.7 to 3.4
0.1 to 0.25
Tin (Sn), % 0 to 0.2
0
Titanium (Ti), % 0
0.040 to 0.1
Zinc (Zn), % 18.4 to 24.3
0 to 0.1
Residuals, % 0
0 to 0.15