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7049 Aluminum vs. C99750 Brass

7049 aluminum belongs to the aluminum alloys classification, while C99750 brass belongs to the copper alloys. There are 27 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 C99750 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
110 to 120
Elastic (Young's, Tensile) Modulus, GPa 70
130
Elongation at Break, % 6.2 to 7.0
20 to 30
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 27
48
Tensile Strength: Ultimate (UTS), MPa 510 to 530
450 to 520
Tensile Strength: Yield (Proof), MPa 420 to 450
220 to 280

Thermal Properties

Latent Heat of Fusion, J/g 370
200
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 640
840
Melting Onset (Solidus), °C 480
820
Specific Heat Capacity, J/kg-K 860
410
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 10
23
Density, g/cm3 3.1
8.1
Embodied Carbon, kg CO2/kg material 8.1
3.1
Embodied Energy, MJ/kg 140
51
Embodied Water, L/kg 1110
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
190 to 300
Stiffness to Weight: Axial, points 13
8.6
Stiffness to Weight: Bending, points 45
21
Strength to Weight: Axial, points 46 to 47
15 to 18
Strength to Weight: Bending, points 46 to 47
16 to 18
Thermal Shock Resistance, points 22 to 23
13 to 15

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0.25 to 3.0
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
55 to 61
Iron (Fe), % 0 to 0.35
0 to 1.0
Lead (Pb), % 0
0.5 to 2.5
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
17 to 23
Nickel (Ni), % 0
0 to 5.0
Silicon (Si), % 0 to 0.25
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
17 to 23
Residuals, % 0
0 to 0.3