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7049 Aluminum vs. C84800 Brass

7049 aluminum belongs to the aluminum alloys classification, while C84800 brass belongs to the copper alloys. There are 28 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 7049 aluminum and the bottom bar is C84800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
100
Elongation at Break, % 6.2 to 7.0
18
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 27
39
Tensile Strength: Ultimate (UTS), MPa 510 to 530
230
Tensile Strength: Yield (Proof), MPa 420 to 450
100

Thermal Properties

Latent Heat of Fusion, J/g 370
180
Maximum Temperature: Mechanical, °C 180
150
Melting Completion (Liquidus), °C 640
950
Melting Onset (Solidus), °C 480
830
Specific Heat Capacity, J/kg-K 860
370
Thermal Conductivity, W/m-K 130
72
Thermal Expansion, µm/m-K 23
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
27
Density, g/cm3 3.1
8.6
Embodied Carbon, kg CO2/kg material 8.1
2.8
Embodied Energy, MJ/kg 140
46
Embodied Water, L/kg 1110
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
34
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
53
Stiffness to Weight: Axial, points 13
6.6
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 46 to 47
7.3
Strength to Weight: Bending, points 46 to 47
9.6
Thermal Diffusivity, mm2/s 51
23
Thermal Shock Resistance, points 22 to 23
8.2

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
75 to 77
Iron (Fe), % 0 to 0.35
0 to 0.4
Lead (Pb), % 0
5.5 to 7.0
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.25
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.0 to 3.0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
13 to 17
Residuals, % 0
0 to 0.7