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4047 Aluminum vs. C34500 Brass

4047 aluminum belongs to the aluminum alloys classification, while C34500 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 4047 aluminum and the bottom bar is C34500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
100
Elongation at Break, % 3.4
12 to 28
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 27
40
Shear Strength, MPa 69
220 to 260
Tensile Strength: Ultimate (UTS), MPa 120
340 to 430
Tensile Strength: Yield (Proof), MPa 64
120 to 180

Thermal Properties

Latent Heat of Fusion, J/g 570
170
Maximum Temperature: Mechanical, °C 160
120
Melting Completion (Liquidus), °C 580
910
Melting Onset (Solidus), °C 580
890
Specific Heat Capacity, J/kg-K 900
380
Thermal Conductivity, W/m-K 130
120
Thermal Expansion, µm/m-K 21
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
26
Electrical Conductivity: Equal Weight (Specific), % IACS 120
29

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
24
Density, g/cm3 2.5
8.2
Embodied Carbon, kg CO2/kg material 7.7
2.6
Embodied Energy, MJ/kg 140
45
Embodied Water, L/kg 1050
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.5
42 to 75
Resilience: Unit (Modulus of Resilience), kJ/m3 28
69 to 160
Stiffness to Weight: Axial, points 16
7.1
Stiffness to Weight: Bending, points 55
19
Strength to Weight: Axial, points 13
12 to 15
Strength to Weight: Bending, points 21
13 to 16
Thermal Diffusivity, mm2/s 59
37
Thermal Shock Resistance, points 5.6
11 to 14

Alloy Composition

Aluminum (Al), % 85.3 to 89
0
Copper (Cu), % 0 to 0.3
62 to 65
Iron (Fe), % 0 to 0.8
0 to 0.15
Lead (Pb), % 0
1.5 to 2.5
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.15
0
Silicon (Si), % 11 to 13
0
Zinc (Zn), % 0 to 0.2
32 to 36.5
Residuals, % 0
0 to 0.4