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238.0 Aluminum vs. CC761S Brass

238.0 aluminum belongs to the aluminum alloys classification, while CC761S brass belongs to the copper alloys. There are 28 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 238.0 aluminum and the bottom bar is CC761S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
110
Elongation at Break, % 1.5
8.7
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 28
42
Tensile Strength: Ultimate (UTS), MPa 210
540
Tensile Strength: Yield (Proof), MPa 170
340

Thermal Properties

Latent Heat of Fusion, J/g 430
260
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 600
960
Melting Onset (Solidus), °C 510
910
Specific Heat Capacity, J/kg-K 840
410
Thermal Conductivity, W/m-K 100
27
Thermal Expansion, µm/m-K 21
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
40
Electrical Conductivity: Equal Weight (Specific), % IACS 67
43

Otherwise Unclassified Properties

Base Metal Price, % relative 12
27
Density, g/cm3 3.4
8.3
Embodied Carbon, kg CO2/kg material 7.4
2.7
Embodied Energy, MJ/kg 140
45
Embodied Water, L/kg 1040
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.9
41
Resilience: Unit (Modulus of Resilience), kJ/m3 180
530
Stiffness to Weight: Axial, points 12
7.4
Stiffness to Weight: Bending, points 42
19
Strength to Weight: Axial, points 17
18
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 37
8.0
Thermal Shock Resistance, points 9.1
19

Alloy Composition

Aluminum (Al), % 81.9 to 84.9
0 to 0.1
Antimony (Sb), % 0
0 to 0.050
Copper (Cu), % 9.5 to 10.5
78 to 83
Iron (Fe), % 1.0 to 1.5
0 to 0.6
Lead (Pb), % 0
0 to 0.8
Magnesium (Mg), % 0 to 0.25
0
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 3.6 to 4.4
3.0 to 5.0
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 1.0 to 1.5
8.9 to 19