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7049 Aluminum vs. C84100 Brass

7049 aluminum belongs to the aluminum alloys classification, while C84100 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 C84100 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
65
Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 6.2 to 7.0
13
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
81

Thermal Properties

Latent Heat of Fusion, J/g 370
190
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 640
1000
Melting Onset (Solidus), °C 480
810
Specific Heat Capacity, J/kg-K 860
380
Thermal Conductivity, W/m-K 130
110
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
23
Electrical Conductivity: Equal Weight (Specific), % IACS 110
25

Otherwise Unclassified Properties

Base Metal Price, % relative 10
29
Density, g/cm3 3.1
8.5
Embodied Carbon, kg CO2/kg material 8.1
2.9
Embodied Energy, MJ/kg 140
48
Embodied Water, L/kg 1110
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
24
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
30
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 45
19
Strength to Weight: Axial, points 46 to 47
7.4
Strength to Weight: Bending, points 46 to 47
9.7
Thermal Diffusivity, mm2/s 51
33
Thermal Shock Resistance, points 22 to 23
7.8

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0 to 0.010
Antimony (Sb), % 0
0 to 0.050
Bismuth (Bi), % 0
0 to 0.090
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
78 to 85
Iron (Fe), % 0 to 0.35
0 to 0.3
Lead (Pb), % 0
0.050 to 0.25
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.25
0 to 0.010
Tin (Sn), % 0
1.5 to 4.5
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
12 to 20
Residuals, % 0
0 to 0.5