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EN AC-21100 Aluminum vs. C86700 Bronze

EN AC-21100 aluminum belongs to the aluminum alloys classification, while C86700 bronze belongs to the copper alloys. There are 28 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 EN AC-21100 aluminum and the bottom bar is C86700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Elongation at Break, % 6.2 to 7.3
17
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 27
41
Tensile Strength: Ultimate (UTS), MPa 340 to 350
630
Tensile Strength: Yield (Proof), MPa 210 to 240
250

Thermal Properties

Latent Heat of Fusion, J/g 390
180
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 670
880
Melting Onset (Solidus), °C 550
860
Specific Heat Capacity, J/kg-K 880
400
Thermal Conductivity, W/m-K 130
89
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
17
Electrical Conductivity: Equal Weight (Specific), % IACS 100
19

Otherwise Unclassified Properties

Base Metal Price, % relative 11
23
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.0
2.9
Embodied Energy, MJ/kg 150
49
Embodied Water, L/kg 1150
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
86
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
290
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 46
20
Strength to Weight: Axial, points 31 to 33
22
Strength to Weight: Bending, points 36 to 37
21
Thermal Diffusivity, mm2/s 48
28
Thermal Shock Resistance, points 15
21

Alloy Composition


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Aluminum (Al), % 93.4 to 95.7
1.0 to 3.0
Copper (Cu), % 4.2 to 5.2
55 to 60
Iron (Fe), % 0 to 0.19
1.0 to 3.0
Lead (Pb), % 0
0.5 to 1.5
Manganese (Mn), % 0 to 0.55
1.0 to 3.5
Nickel (Ni), % 0
0 to 1.0
Silicon (Si), % 0 to 0.18
0
Tin (Sn), % 0
0 to 1.5
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.070
30 to 38
Residuals, % 0 to 0.1
0 to 1.0