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6351 Aluminum vs. C19400 Copper

6351 aluminum belongs to the aluminum alloys classification, while C19400 copper 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 6351 aluminum and the bottom bar is C19400 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Elongation at Break, % 7.8 to 18
2.3 to 37
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
44
Shear Strength, MPa 84 to 200
210 to 300
Tensile Strength: Ultimate (UTS), MPa 140 to 310
310 to 630
Tensile Strength: Yield (Proof), MPa 95 to 270
98 to 520

Thermal Properties

Latent Heat of Fusion, J/g 410
210
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 650
1090
Melting Onset (Solidus), °C 570
1080
Specific Heat Capacity, J/kg-K 900
390
Thermal Conductivity, W/m-K 180
260
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
58 to 68
Electrical Conductivity: Equal Weight (Specific), % IACS 150
58 to 69

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
30
Density, g/cm3 2.7
8.9
Embodied Carbon, kg CO2/kg material 8.3
2.6
Embodied Energy, MJ/kg 150
40
Embodied Water, L/kg 1180
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 38
5.5 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 65 to 540
41 to 1140
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 14 to 32
9.7 to 20
Strength to Weight: Bending, points 22 to 38
11 to 18
Thermal Diffusivity, mm2/s 72
75
Thermal Shock Resistance, points 6.1 to 14
11 to 22

Alloy Composition

Aluminum (Al), % 96 to 98.5
0
Copper (Cu), % 0 to 0.1
96.8 to 97.8
Iron (Fe), % 0 to 0.5
2.1 to 2.6
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 0.4 to 0.8
0
Manganese (Mn), % 0.4 to 0.8
0
Phosphorus (P), % 0
0.015 to 0.15
Silicon (Si), % 0.7 to 1.3
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.2
0.050 to 0.2
Residuals, % 0
0 to 0.2