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EN AC-71100 Aluminum vs. C68800 Brass

EN AC-71100 aluminum belongs to the aluminum alloys classification, while C68800 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 EN AC-71100 aluminum and the bottom bar is C68800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
110
Elongation at Break, % 1.1
2.0 to 36
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 27
41
Tensile Strength: Ultimate (UTS), MPa 260
570 to 890
Tensile Strength: Yield (Proof), MPa 230
390 to 790

Thermal Properties

Latent Heat of Fusion, J/g 490
190
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 580
960
Melting Onset (Solidus), °C 520
950
Specific Heat Capacity, J/kg-K 860
400
Thermal Expansion, µm/m-K 22
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
18
Electrical Conductivity: Equal Weight (Specific), % IACS 97
20

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
26
Density, g/cm3 2.9
8.2
Embodied Carbon, kg CO2/kg material 7.4
2.8
Embodied Energy, MJ/kg 140
48
Embodied Water, L/kg 1010
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
16 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 360
710 to 2860
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 47
19
Strength to Weight: Axial, points 25
19 to 30
Strength to Weight: Bending, points 31
19 to 25
Thermal Shock Resistance, points 12
19 to 30

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
3.0 to 3.8
Cobalt (Co), % 0
0.25 to 0.55
Copper (Cu), % 0 to 0.1
70.8 to 75.5
Iron (Fe), % 0 to 0.3
0 to 0.2
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
0
Silicon (Si), % 7.5 to 9.5
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 9.0 to 10.5
21.3 to 24.1
Residuals, % 0
0 to 0.5