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7049 Aluminum vs. C87900 Brass

7049 aluminum belongs to the aluminum alloys classification, while C87900 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 7049 aluminum and the bottom bar is C87900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 6.2 to 7.0
25
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 27
41
Tensile Strength: Ultimate (UTS), MPa 510 to 530
480
Tensile Strength: Yield (Proof), MPa 420 to 450
240

Thermal Properties

Latent Heat of Fusion, J/g 370
190
Maximum Temperature: Mechanical, °C 180
130
Melting Completion (Liquidus), °C 640
930
Melting Onset (Solidus), °C 480
900
Specific Heat Capacity, J/kg-K 860
390
Thermal Conductivity, W/m-K 130
120
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
15
Electrical Conductivity: Equal Weight (Specific), % IACS 110
17

Otherwise Unclassified Properties

Base Metal Price, % relative 10
24
Density, g/cm3 3.1
8.1
Embodied Carbon, kg CO2/kg material 8.1
2.7
Embodied Energy, MJ/kg 140
46
Embodied Water, L/kg 1110
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
100
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
270
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 45
20
Strength to Weight: Axial, points 46 to 47
17
Strength to Weight: Bending, points 46 to 47
17
Thermal Diffusivity, mm2/s 51
37
Thermal Shock Resistance, points 22 to 23
16

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0 to 0.15
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
63 to 69.2
Iron (Fe), % 0 to 0.35
0 to 0.4
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0 to 0.15
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.25
0.8 to 1.2
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
0 to 0.25
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
30 to 36
Residuals, % 0 to 0.15
0