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3004 Aluminum vs. C68400 Brass

3004 aluminum belongs to the aluminum alloys classification, while C68400 brass belongs to the copper alloys. There are 30 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 3004 aluminum and the bottom bar is C68400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 83
150
Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 1.1 to 19
18
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 26
41
Shear Strength, MPa 100 to 180
330
Tensile Strength: Ultimate (UTS), MPa 170 to 310
540
Tensile Strength: Yield (Proof), MPa 68 to 270
310

Thermal Properties

Latent Heat of Fusion, J/g 400
210
Maximum Temperature: Mechanical, °C 180
130
Melting Completion (Liquidus), °C 650
840
Melting Onset (Solidus), °C 630
820
Specific Heat Capacity, J/kg-K 900
400
Thermal Conductivity, W/m-K 160
66
Thermal Expansion, µm/m-K 24
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
87
Electrical Conductivity: Equal Weight (Specific), % IACS 140
99

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
23
Density, g/cm3 2.8
7.9
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1180
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 27
81
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 540
460
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 50
20
Strength to Weight: Axial, points 18 to 31
19
Strength to Weight: Bending, points 25 to 37
19
Thermal Diffusivity, mm2/s 65
21
Thermal Shock Resistance, points 7.6 to 13
18

Alloy Composition

Aluminum (Al), % 95.6 to 98.2
0 to 0.5
Boron (B), % 0
0.0010 to 0.030
Copper (Cu), % 0 to 0.25
59 to 64
Iron (Fe), % 0 to 0.7
0 to 1.0
Lead (Pb), % 0
0 to 0.090
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 1.0 to 1.5
0.2 to 1.5
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0
0.030 to 0.3
Silicon (Si), % 0 to 0.3
1.5 to 2.5
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 0 to 0.25
28.6 to 39.3
Residuals, % 0
0 to 0.5