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C355.0 Aluminum vs. C69400 Brass

C355.0 aluminum belongs to the aluminum alloys classification, while C69400 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 C355.0 aluminum and the bottom bar is C69400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 2.7 to 3.8
17
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
42
Tensile Strength: Ultimate (UTS), MPa 290 to 310
570
Tensile Strength: Yield (Proof), MPa 200 to 230
270

Thermal Properties

Latent Heat of Fusion, J/g 470
260
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 620
920
Melting Onset (Solidus), °C 570
820
Specific Heat Capacity, J/kg-K 900
410
Thermal Conductivity, W/m-K 150
26
Thermal Expansion, µm/m-K 22
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 130
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
27
Density, g/cm3 2.7
8.3
Embodied Carbon, kg CO2/kg material 8.0
2.7
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1120
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.5 to 9.8
80
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 380
340
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 51
19
Strength to Weight: Axial, points 30 to 32
19
Strength to Weight: Bending, points 36 to 37
18
Thermal Diffusivity, mm2/s 60
7.7
Thermal Shock Resistance, points 13 to 14
20

Alloy Composition

Aluminum (Al), % 91.7 to 94.1
0
Copper (Cu), % 1.0 to 1.5
80 to 83
Iron (Fe), % 0 to 0.2
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.1
0
Silicon (Si), % 4.5 to 5.5
3.5 to 4.5
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
11.5 to 16.5
Residuals, % 0
0 to 0.5