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384.0 Aluminum vs. C85700 Brass

384.0 aluminum belongs to the aluminum alloys classification, while C85700 brass belongs to the copper 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 384.0 aluminum and the bottom bar is C85700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 74
100
Elongation at Break, % 2.5
17
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 28
40
Tensile Strength: Ultimate (UTS), MPa 330
310
Tensile Strength: Yield (Proof), MPa 170
110

Thermal Properties

Latent Heat of Fusion, J/g 550
170
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 580
940
Melting Onset (Solidus), °C 530
910
Specific Heat Capacity, J/kg-K 870
380
Thermal Conductivity, W/m-K 96
84
Thermal Expansion, µm/m-K 21
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
22
Electrical Conductivity: Equal Weight (Specific), % IACS 69
25

Otherwise Unclassified Properties

Base Metal Price, % relative 11
24
Density, g/cm3 2.9
8.0
Embodied Carbon, kg CO2/kg material 7.4
2.8
Embodied Energy, MJ/kg 140
47
Embodied Water, L/kg 1010
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
41
Resilience: Unit (Modulus of Resilience), kJ/m3 190
59
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 49
20
Strength to Weight: Axial, points 32
11
Strength to Weight: Bending, points 37
13
Thermal Diffusivity, mm2/s 39
27
Thermal Shock Resistance, points 15
10

Alloy Composition

Aluminum (Al), % 77.3 to 86.5
0 to 0.8
Copper (Cu), % 3.0 to 4.5
58 to 64
Iron (Fe), % 0 to 1.3
0 to 0.7
Lead (Pb), % 0
0.8 to 1.5
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.5
0 to 1.0
Silicon (Si), % 10.5 to 12
0 to 0.050
Tin (Sn), % 0 to 0.35
0.5 to 1.5
Zinc (Zn), % 0 to 3.0
32 to 40
Residuals, % 0
0 to 1.3