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7049 Aluminum vs. C23000 Brass

7049 aluminum belongs to the aluminum alloys classification, while C23000 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 7049 aluminum and the bottom bar is C23000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 6.2 to 7.0
2.9 to 47
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 27
42
Shear Strength, MPa 300 to 310
220 to 340
Tensile Strength: Ultimate (UTS), MPa 510 to 530
280 to 590
Tensile Strength: Yield (Proof), MPa 420 to 450
83 to 480

Thermal Properties

Latent Heat of Fusion, J/g 370
190
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 640
1030
Melting Onset (Solidus), °C 480
990
Specific Heat Capacity, J/kg-K 860
390
Thermal Conductivity, W/m-K 130
160
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
37
Electrical Conductivity: Equal Weight (Specific), % IACS 110
39

Otherwise Unclassified Properties

Base Metal Price, % relative 10
28
Density, g/cm3 3.1
8.6
Embodied Carbon, kg CO2/kg material 8.1
2.6
Embodied Energy, MJ/kg 140
43
Embodied Water, L/kg 1110
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
6.2 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
31 to 1040
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 45
19
Strength to Weight: Axial, points 46 to 47
8.9 to 19
Strength to Weight: Bending, points 46 to 47
11 to 18
Thermal Diffusivity, mm2/s 51
48
Thermal Shock Resistance, points 22 to 23
9.4 to 20

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
84 to 86
Iron (Fe), % 0 to 0.35
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0
Silicon (Si), % 0 to 0.25
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
13.7 to 16
Residuals, % 0
0 to 0.2