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A242.0 Aluminum vs. C99750 Brass

A242.0 aluminum belongs to the aluminum alloys classification, while C99750 brass belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, 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 C99750 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
110 to 120
Elastic (Young's, Tensile) Modulus, GPa 73
130
Elongation at Break, % 1.6
20 to 30
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
48
Tensile Strength: Ultimate (UTS), MPa 220
450 to 520

Thermal Properties

Latent Heat of Fusion, J/g 390
200
Maximum Temperature: Mechanical, °C 210
160
Melting Completion (Liquidus), °C 680
840
Melting Onset (Solidus), °C 550
820
Specific Heat Capacity, J/kg-K 870
410
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 3.1
8.1
Embodied Carbon, kg CO2/kg material 8.3
3.1
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 1130
310

Common Calculations

Stiffness to Weight: Axial, points 13
8.6
Stiffness to Weight: Bending, points 45
21
Strength to Weight: Axial, points 20
15 to 18
Strength to Weight: Bending, points 26
16 to 18
Thermal Shock Resistance, points 9.3
13 to 15

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
0.25 to 3.0
Chromium (Cr), % 0.15 to 0.25
0
Copper (Cu), % 3.7 to 4.5
55 to 61
Iron (Fe), % 0 to 0.8
0 to 1.0
Lead (Pb), % 0
0.5 to 2.5
Magnesium (Mg), % 1.2 to 1.7
0
Manganese (Mn), % 0 to 0.1
17 to 23
Nickel (Ni), % 1.8 to 2.3
0 to 5.0
Silicon (Si), % 0 to 0.6
0
Titanium (Ti), % 0.070 to 0.2
0
Zinc (Zn), % 0 to 0.1
17 to 23
Residuals, % 0
0 to 0.3