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6101B Aluminum vs. C68400 Brass

6101B aluminum belongs to the aluminum alloys classification, while C68400 brass belongs to the copper alloys. There are 29 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 6101B aluminum and the bottom bar is C68400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
110
Elongation at Break, % 9.1 to 13
18
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 26
41
Shear Strength, MPa 120 to 150
330
Tensile Strength: Ultimate (UTS), MPa 190 to 250
540
Tensile Strength: Yield (Proof), MPa 140 to 180
310

Thermal Properties

Latent Heat of Fusion, J/g 400
210
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 640
840
Melting Onset (Solidus), °C 630
820
Specific Heat Capacity, J/kg-K 900
400
Thermal Conductivity, W/m-K 210
66
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 57
87
Electrical Conductivity: Equal Weight (Specific), % IACS 190
99

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
23
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1190
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 23
81
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 240
460
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 50
20
Strength to Weight: Axial, points 20 to 25
19
Strength to Weight: Bending, points 27 to 32
19
Thermal Diffusivity, mm2/s 87
21
Thermal Shock Resistance, points 8.5 to 11
18

Alloy Composition

Aluminum (Al), % 98.2 to 99.3
0 to 0.5
Boron (B), % 0
0.0010 to 0.030
Copper (Cu), % 0 to 0.050
59 to 64
Iron (Fe), % 0.1 to 0.3
0 to 1.0
Lead (Pb), % 0
0 to 0.090
Magnesium (Mg), % 0.35 to 0.6
0
Manganese (Mn), % 0 to 0.050
0.2 to 1.5
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0
0.030 to 0.3
Silicon (Si), % 0.3 to 0.6
1.5 to 2.5
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 0 to 0.1
28.6 to 39.3
Residuals, % 0
0 to 0.5