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C69400 Brass vs. 4115 Aluminum

C69400 brass belongs to the copper alloys classification, while 4115 aluminum belongs to the aluminum 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 C69400 brass and the bottom bar is 4115 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 17
1.1 to 11
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 42
26
Shear Strength, MPa 350
71 to 130
Tensile Strength: Ultimate (UTS), MPa 570
120 to 220
Tensile Strength: Yield (Proof), MPa 270
39 to 190

Thermal Properties

Latent Heat of Fusion, J/g 260
420
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 920
640
Melting Onset (Solidus), °C 820
590
Specific Heat Capacity, J/kg-K 410
900
Thermal Conductivity, W/m-K 26
160
Thermal Expansion, µm/m-K 18
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.2
41
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
140

Otherwise Unclassified Properties

Base Metal Price, % relative 27
9.5
Density, g/cm3 8.3
2.7
Embodied Carbon, kg CO2/kg material 2.7
8.1
Embodied Energy, MJ/kg 44
150
Embodied Water, L/kg 300
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
2.1 to 10
Resilience: Unit (Modulus of Resilience), kJ/m3 340
11 to 270
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
50
Strength to Weight: Axial, points 19
12 to 23
Strength to Weight: Bending, points 18
20 to 30
Thermal Diffusivity, mm2/s 7.7
66
Thermal Shock Resistance, points 20
5.2 to 9.9

Alloy Composition

Aluminum (Al), % 0
94.6 to 97.4
Copper (Cu), % 80 to 83
0.1 to 0.5
Iron (Fe), % 0 to 0.2
0 to 0.7
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0
0.1 to 0.5
Manganese (Mn), % 0
0.6 to 1.2
Silicon (Si), % 3.5 to 4.5
1.8 to 2.2
Zinc (Zn), % 11.5 to 16.5
0 to 0.2
Residuals, % 0
0 to 0.15