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3004 Aluminum vs. C69700 Brass

3004 aluminum belongs to the aluminum alloys classification, while C69700 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 3004 aluminum and the bottom bar is C69700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 1.1 to 19
25
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
41
Shear Strength, MPa 100 to 180
300
Tensile Strength: Ultimate (UTS), MPa 170 to 310
470
Tensile Strength: Yield (Proof), MPa 68 to 270
230

Thermal Properties

Latent Heat of Fusion, J/g 400
240
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 650
930
Melting Onset (Solidus), °C 630
880
Specific Heat Capacity, J/kg-K 900
400
Thermal Conductivity, W/m-K 160
43
Thermal Expansion, µm/m-K 24
19

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
26
Density, g/cm3 2.8
8.3
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1180
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 27
99
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 540
250
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 18 to 31
16
Strength to Weight: Bending, points 25 to 37
16
Thermal Diffusivity, mm2/s 65
13
Thermal Shock Resistance, points 7.6 to 13
16

Alloy Composition

Aluminum (Al), % 95.6 to 98.2
0
Copper (Cu), % 0 to 0.25
75 to 80
Iron (Fe), % 0 to 0.7
0 to 0.2
Lead (Pb), % 0
0.5 to 1.5
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 1.0 to 1.5
0 to 0.4
Silicon (Si), % 0 to 0.3
2.5 to 3.5
Zinc (Zn), % 0 to 0.25
13.9 to 22
Residuals, % 0
0 to 0.5