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3004 Aluminum vs. C38000 Brass

3004 aluminum belongs to the aluminum alloys classification, while C38000 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 C38000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
100
Elongation at Break, % 1.1 to 19
17
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 26
39
Shear Strength, MPa 100 to 180
230
Tensile Strength: Ultimate (UTS), MPa 170 to 310
380
Tensile Strength: Yield (Proof), MPa 68 to 270
120

Thermal Properties

Latent Heat of Fusion, J/g 400
170
Maximum Temperature: Mechanical, °C 180
110
Melting Completion (Liquidus), °C 650
800
Melting Onset (Solidus), °C 630
760
Specific Heat Capacity, J/kg-K 900
380
Thermal Conductivity, W/m-K 160
110
Thermal Expansion, µm/m-K 24
21

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
22
Density, g/cm3 2.8
8.0
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1180
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 27
50
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 540
74
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 18 to 31
13
Strength to Weight: Bending, points 25 to 37
14
Thermal Diffusivity, mm2/s 65
37
Thermal Shock Resistance, points 7.6 to 13
13

Alloy Composition

Aluminum (Al), % 95.6 to 98.2
0 to 0.5
Copper (Cu), % 0 to 0.25
55 to 60
Iron (Fe), % 0 to 0.7
0 to 0.35
Lead (Pb), % 0
1.5 to 2.5
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 1.0 to 1.5
0
Silicon (Si), % 0 to 0.3
0
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 0 to 0.25
35.9 to 43.5
Residuals, % 0
0 to 0.5