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5251 Aluminum vs. C86300 Bronze

5251 aluminum belongs to the aluminum alloys classification, while C86300 bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 5251 aluminum and the bottom bar is C86300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 44 to 79
250
Elastic (Young's, Tensile) Modulus, GPa 68
110
Elongation at Break, % 2.0 to 19
14
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
42
Tensile Strength: Ultimate (UTS), MPa 180 to 280
850
Tensile Strength: Yield (Proof), MPa 67 to 250
480

Thermal Properties

Latent Heat of Fusion, J/g 400
200
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 650
920
Melting Onset (Solidus), °C 610
890
Specific Heat Capacity, J/kg-K 900
420
Thermal Conductivity, W/m-K 150
35
Thermal Expansion, µm/m-K 24
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
23
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.5
3.0
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 1180
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
100
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
1030
Stiffness to Weight: Axial, points 14
7.8
Stiffness to Weight: Bending, points 50
20
Strength to Weight: Axial, points 18 to 29
30
Strength to Weight: Bending, points 26 to 35
25
Thermal Diffusivity, mm2/s 61
11
Thermal Shock Resistance, points 7.9 to 13
28

Alloy Composition

Aluminum (Al), % 95.5 to 98.2
5.0 to 7.5
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
60 to 66
Iron (Fe), % 0 to 0.5
2.0 to 4.0
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 1.7 to 2.4
0
Manganese (Mn), % 0.1 to 0.5
2.5 to 5.0
Nickel (Ni), % 0
0 to 1.0
Silicon (Si), % 0 to 0.4
0
Tin (Sn), % 0
0 to 0.2
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
22 to 28
Residuals, % 0 to 0.15
0 to 1.0