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6151 Aluminum vs. C91700 Bronze

6151 aluminum belongs to the aluminum alloys classification, while C91700 bronze belongs to the copper alloys. There are 28 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 6151 aluminum and the bottom bar is C91700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 1.1 to 5.7
13
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
41
Tensile Strength: Ultimate (UTS), MPa 330 to 340
330
Tensile Strength: Yield (Proof), MPa 270 to 280
170

Thermal Properties

Latent Heat of Fusion, J/g 410
190
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 650
1020
Melting Onset (Solidus), °C 590
850
Specific Heat Capacity, J/kg-K 900
370
Thermal Conductivity, W/m-K 170
71
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
10
Electrical Conductivity: Equal Weight (Specific), % IACS 150
10

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
36
Density, g/cm3 2.7
8.7
Embodied Carbon, kg CO2/kg material 8.2
3.9
Embodied Energy, MJ/kg 150
63
Embodied Water, L/kg 1180
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.5 to 18
35
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 580
140
Stiffness to Weight: Axial, points 14
6.9
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 34
11
Strength to Weight: Bending, points 39
12
Thermal Diffusivity, mm2/s 70
22
Thermal Shock Resistance, points 15
12

Alloy Composition

Aluminum (Al), % 95.6 to 98.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Chromium (Cr), % 0.15 to 0.35
0
Copper (Cu), % 0 to 0.35
84.2 to 87.5
Iron (Fe), % 0 to 1.0
0 to 0.2
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 0.45 to 0.8
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 0
1.2 to 2.0
Phosphorus (P), % 0
0 to 0.3
Silicon (Si), % 0.6 to 1.2
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
11.3 to 12.5
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0 to 0.25
Residuals, % 0 to 0.15
0