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CC755S Brass vs. 1235 Aluminum

CC755S brass belongs to the copper alloys classification, while 1235 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 CC755S brass and the bottom bar is 1235 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
69
Elongation at Break, % 9.5
28 to 34
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 40
26
Tensile Strength: Ultimate (UTS), MPa 390
80 to 84
Tensile Strength: Yield (Proof), MPa 250
23 to 57

Thermal Properties

Latent Heat of Fusion, J/g 170
400
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 820
640
Melting Onset (Solidus), °C 780
640
Specific Heat Capacity, J/kg-K 390
900
Thermal Conductivity, W/m-K 120
230
Thermal Expansion, µm/m-K 21
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
60
Electrical Conductivity: Equal Weight (Specific), % IACS 30
200

Otherwise Unclassified Properties

Base Metal Price, % relative 23
9.5
Density, g/cm3 8.1
2.7
Embodied Carbon, kg CO2/kg material 2.7
8.3
Embodied Energy, MJ/kg 46
160
Embodied Water, L/kg 330
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33
17 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 290
3.8 to 24
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 19
50
Strength to Weight: Axial, points 14
8.2 to 8.6
Strength to Weight: Bending, points 15
15 to 16
Thermal Diffusivity, mm2/s 38
93
Thermal Shock Resistance, points 13
3.6 to 3.7

Alloy Composition

Aluminum (Al), % 0.4 to 0.7
99.35 to 100
Copper (Cu), % 59.5 to 61
0 to 0.050
Iron (Fe), % 0.050 to 0.2
0 to 0.65
Lead (Pb), % 1.2 to 1.7
0
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 0.050
0 to 0.050
Nickel (Ni), % 0 to 0.2
0
Silicon (Si), % 0 to 0.050
0 to 0.65
Tin (Sn), % 0 to 0.3
0
Titanium (Ti), % 0
0 to 0.060
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 35.8 to 38.9
0 to 0.1