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851.0 Aluminum vs. C34500 Brass

851.0 aluminum belongs to the aluminum alloys classification, while C34500 brass belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (5, 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 851.0 aluminum and the bottom bar is C34500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
100
Elongation at Break, % 3.9 to 9.1
12 to 28
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 26
40
Tensile Strength: Ultimate (UTS), MPa 130 to 140
340 to 430

Thermal Properties

Latent Heat of Fusion, J/g 410
170
Maximum Temperature: Mechanical, °C 180
120
Melting Completion (Liquidus), °C 630
910
Melting Onset (Solidus), °C 360
890
Specific Heat Capacity, J/kg-K 850
380
Thermal Conductivity, W/m-K 180
120
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
26
Electrical Conductivity: Equal Weight (Specific), % IACS 140
29

Otherwise Unclassified Properties

Base Metal Price, % relative 14
24
Density, g/cm3 3.1
8.2
Embodied Carbon, kg CO2/kg material 8.4
2.6
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 1140
320

Common Calculations

Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 45
19
Strength to Weight: Axial, points 12 to 13
12 to 15
Strength to Weight: Bending, points 19 to 20
13 to 16
Thermal Diffusivity, mm2/s 69
37
Thermal Shock Resistance, points 6.1 to 6.3
11 to 14

Alloy Composition

Aluminum (Al), % 86.6 to 91.5
0
Copper (Cu), % 0.7 to 1.3
62 to 65
Iron (Fe), % 0 to 0.7
0 to 0.15
Lead (Pb), % 0
1.5 to 2.5
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0.3 to 0.7
0
Silicon (Si), % 2.0 to 3.0
0
Tin (Sn), % 5.5 to 7.0
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0
32 to 36.5
Residuals, % 0
0 to 0.4