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A242.0 Aluminum vs. C85700 Brass

A242.0 aluminum belongs to the aluminum alloys classification, while C85700 brass belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (4, 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 A242.0 aluminum and the bottom bar is C85700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
100
Elongation at Break, % 1.6
17
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 220
310

Thermal Properties

Latent Heat of Fusion, J/g 390
170
Maximum Temperature: Mechanical, °C 210
120
Melting Completion (Liquidus), °C 680
940
Melting Onset (Solidus), °C 550
910
Specific Heat Capacity, J/kg-K 870
380
Thermal Conductivity, W/m-K 140
84
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
22
Electrical Conductivity: Equal Weight (Specific), % IACS 110
25

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 3.1
8.0
Embodied Carbon, kg CO2/kg material 8.3
2.8
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1130
330

Common Calculations

Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 45
20
Strength to Weight: Axial, points 20
11
Strength to Weight: Bending, points 26
13
Thermal Diffusivity, mm2/s 52
27
Thermal Shock Resistance, points 9.3
10

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
0 to 0.8
Chromium (Cr), % 0.15 to 0.25
0
Copper (Cu), % 3.7 to 4.5
58 to 64
Iron (Fe), % 0 to 0.8
0 to 0.7
Lead (Pb), % 0
0.8 to 1.5
Magnesium (Mg), % 1.2 to 1.7
0
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 1.8 to 2.3
0 to 1.0
Silicon (Si), % 0 to 0.6
0 to 0.050
Tin (Sn), % 0
0.5 to 1.5
Titanium (Ti), % 0.070 to 0.2
0
Zinc (Zn), % 0 to 0.1
32 to 40
Residuals, % 0
0 to 1.3